Finding headers to swap a 351W into a Mustang is a challenge
Below are headers I have found. The Powertrain headers are you best choice for fit and power but only fit 1967-1973.

The Hedman hedders are not intended for the 1/8" raised exhaust ports of the AFR 205 heads.
The shortie headers either Hedman or JBA should work, but headers often prove to be a challenge to fit.

 

 Powertrain Custom Headers

1967-73 Mustang 351W with Dart / Canfield / AFR205 Heads (full 1 3/4" tube to fit large port heads)

$540 Uncoated
$600 Chrome coated
$740 Ceramic coated

Will clear Lakewood Bell housings
Will fit Total Control Rack & Pinion Steering
Manual & power steer applications
1 3/4" Primary on Dart Head- 1 5/8"/ 1 3/4" Step option for stock port heads
 

 Upgraded to Ball and Scoket fit for better sealing see 302 header below.

 

 

 1965-73 289-302-347 W/ GTP & Dart Heads

 

Year               Model           Engine   Design   Notes
         
 55-57 T-Bird  New  Y-Block 292-312  4 Tube Step  
58-60 T-Bird F.E. Shorty A    B    C    E
61-66 T-Bird F.E Shorty C
 67  T-Bird New  F.E  Shorty A  B  C
 55-59  Ford Passenger  F.E.  Shorty A     B    C     E
55-59 Ford Passenger 429-460 Shorty C    D    E    G
60-64 Galaxie/ Mercury F.E. Tri-Y A    B   C    E   H
60-64 Galaxie 429-460 Shorty C    D
65-70 Galaxie F.E.352-428 Shorty A    B    C    E
60-70 Galaxie F.E. 352-428 Shorty  
65-73 Mustang/ Cougar 289-302 W/ GTP & Dart Heads Tri-Y C    G    H    K
65-66 Mustang 351C 2V/4V 4 Tube

G    *    H

65-73 Mustang 302C High Port 4 Tube *
66-73 Mustang/ Cougar 351C 2V/4V 4 Tube E    G    H
67-73 Mustang/Cougar 351W/Dart/Canfield/AFR205 (full 1 3/4" tube) 4 Tube C    E   K   L
67-73 Mustang/Cougar 351W w/standard Ford Port (step design 1 5/8 - 1 3/4) 4 Tube Step C    E   K   L
69-70 Mustang/Cougar Boss 302 4 Tube C    E
65-70 Mustang/Cougar Boss 302 2V/4V 4 Tube  C    E
72-74 Torino/ Montego 351C 2V/4V 4 Tube C
66-69 Fairlane/ Falcon 289-302 W/ GTP & Dart Heads Tri-Y C    G    H    K
66-69 Fairlane/Torino 351W/Dart/Canfield/AFR205 (full 1 3/4" tube) 4 Tube C   E    K   L
66-69 Fairlane/Torino

 

351W w/standard Ford Port (step design 1 5/8 - 1 3/4) 4 Tube Step C    E   K   L
66-70 Fairlane/ Ranchero 390-428 Tri-Y A    B    C    E    H    K
66-67 Fairlane  New 429-460 Shorty D
67-70 Mustang/ Cougar 390-428 Tri-Y A    B    C    E    H    K
67-73 Mustang/ Cougar
Revised 10/13-02
429-460 Shorty D    G
79-93 Mustang 351w Tri-Y *
53-56 F-Series P.U. 429-460 Shorty D    E    G
65-76 F100- F250 2WD & 4x4 352-428 Tri-Y A    B    C    J
78-79 Bronco 429-460 Tri-Y D    F    J

 

Notes:
A- F.E. Series include 352-360-390-406-410-427-428
B- F.E. Available in 16 bolt C.J./ 14 bolt GT/ 8 bolt Std. flanges
C- Manual & power steer applications
D- Available in 429 C.J. flange
E- Will clear Lakewood Bell housings
F- Automatic Trans only
G- Engine swap header may require slight modifications
H- Some 4 speed clutch linkage modifications possible
J- Available in ultra H.D. 3/8 flange 14 gauge tubing
K- Will fit Total Control Rack & Pinion Steering
L- 1 3/4" Primary on Dart Head- 1 5/8"/ 1 3/4" Step option

*- Call for application
 

  All F.P.A. headers utilize 2 1/2" or 3" ball and socket collectors


Most Std. production F.P.A. headers feature 3/8" one piece flanges and 16 gauge
tubing. Standard finish is nickel chrome. All headers are of the "inside the
frame design" and are completely welded with no slip joints. All F.P.A. design
headers feature maximum ground clearance and are shipped with gaskets, bolts
and street reducers. Performance coatings ceramic finish is available at
additional cost.   
 

 

 

 88650 $150
Header Material: Steel
Header Finish: Painted
Header Style: Shorty
Primary Tube Diameter (in): 1 5/8
Collector Diameter (in): 3
Equal Length: No
Primary Tube Gauge: 16-gauge
Collector Attachment: Ball and socket flange
Cylinder Head Port Shape: Oval
Flange Style: Standard
Flange Thickness (in): 1/4
Bolts/Studs Included: Yes
Gaskets Included: Yes
Reducers Included: Yes
Y-Pipe Included: No
Quantity: Sold as a pair.

Model MUSTANG
Beginning Year 1964
Ending Year 1973
Engine Type V8
Engine Size 5.8L/351
Engine Family Ford small block Windsor
Engine Swap No
Drivetrain RWD
Power Steering Yes
Power Brakes Yes
Air Conditioning Yes
Standard Transmission Column Shift No
Standard Transmission Floor Shift Yes
Automatic Transmission Column Shift No
Automatic Transmission Floor Shift Yes
Application Footnotes: C - For 1964-74 vehicles without A.I.R. systems, are considered as O.E.M. replacement parts when existing emission controls are not removed from vehicle.
129 - Modification to shift linkage may be required.
214 - Elite replacement gasket HED-27340.
1 - Without smog injection or injection heads.
15 - Shortie-style header. Maximum ground clearance.
 
 
 

 88660 $155
Header Material: Steel
Header Finish: Painted
Header Style: Full length
Primary Tube Diameter (in): 1 5/8
Collector Diameter (in): 3
Equal Length: No
Primary Tube Gauge: 16-gauge
Collector Attachment: Ball and socket flange
Cylinder Head Port Shape: Oval
Flange Style: Standard
Flange Thickness (in): 1/4
Bolts/Studs Included: Yes
Gaskets Included: Yes
Reducers Included: Yes
Y-Pipe Included: No
Quantity: Sold as a pair.

Headers, Street/Engine Swap, Full Length, Steel, Painted, Ford, Mustang/Ranchero/Torino, 351W, Kit

Model MUSTANG
Beginning Year 1964
Ending Year 1973
Engine Type V8
Engine Size 5.8L/351
Engine Family Ford small block Windsor
Engine Swap No
Drivetrain RWD
Power Steering Yes
Power Brakes Yes
Air Conditioning Yes
Standard Transmission Column Shift No
Standard Transmission Floor Shift No
Automatic Transmission Column Shift No
Automatic Transmission Floor Shift Yes
Application Footnotes: C - For 1964-74 vehicles without A.I.R. systems, are considered as O.E.M. replacement parts when existing emission controls are not removed from vehicle.
51 - Under-chassis exit.
157 - When equipped with manual transmission, will not fit with Ford top loader transmissions.
214 - Elite replacement gasket HED-27340.
1 - Without smog injection or injection heads.
27 - Power steering bracket HED-20120 required.

 

  88308 $285

Tork-Step Stepped Hedders, Exhaust Header, Tube Size 1.5 - 1.625", Collector Size 3", Without Smog Injection Or Injection Heads, Painted, With Automatic C-4 Transmission Only, Without A.I.R Systems Emission Controls Are Not Removed Considered OEM Repl.

 1970-71 Mustang 5.8L, V8, 2 Barrel, Windsor Engine - With Factory Air Conditioning, Power Steering, Automatic Transmission

 

 

 


 www.ajusa.com/cgi-bin/jba/lookup?ajr_skey=de5e79e689ceceb747ac76a15ebd3feb&part_num=1653

1653 Chrome Shortie 1965-73 Mustang 351W $600

These Headers are designed to scavenge the exhaust gas and reduce the restriction typical of the stock cast iron exhaust manifolds. By using the patented Firecone® collector JBA is able to create lots of horsepower and torque.
  • Thick 3/8 inch Header Flange

  • Comes With All New Hardware And Gaskets

  • Includes Any And All Required Emissions Fittings

  • Fits Nicely Within The Engine Compartment

  • Limited Lifetime Warranty

HP & Torque: 15-20 HP/26 ft lbs Torque

Installation: Direct replacement of the stock exhaust manifolds, header bolts up to the existing stock Y-Pipe/Crossover pipe. Requires minimum cutting and welding. Takes between 3 And 6 hours depending on application. Only simple hand tools required All hardware, gaskets, and instructions included.

Tech Notes: Use 1970 motor mounts (D0Oz-6038-G or Sealed Power 270-2286) and 1966-1970 Frame bracket. 50 States Smog Legal!

 

 

Hedman Heeders for 1964-1973351W Mustang

88660

Header Style: Full-length
Header Material: Steel
Header Finish: Painted
Primary Tube Diameter (in): 1 5/8 in.
Collector Attachment: Ball and socket flange
Collector Diameter: 3.000 in.
Tuned: No
Primary Tube Gauge: 18-gauge
Cylinder Head Port Shape: Oval
Flange Style: Standard
Flange Thickness (in): 1/4 in.