9 inch Rear end Question

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MustangGuy2k

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Nov 3, 2021
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Hello Forum Members,

Newbie on the forum but a long time Mustang owner over the years.  Looking to do a resto mod on my 72 Fastback.  I have a chance to purchase a 9 inch that came off a 64-69 Mustang.  Would this work on my 72, and would it need any modifications to fit?

Thanks,

MustangGuy2k

Mustang-Original-2.jpg

 

Sheriff41

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72 Mustang Q-code
Welcome to the forums!  Looks like you have a nice project.  The third-member will fit if you have a 9" housing in your '72.  You would need to check the axle spline count (28 vs 31) to determine if you axles are compatible.

 
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bishoppeak

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1972 Fastback being converted into a 1971 Mach 1 restomod visually duplicating the new one I owned at 17.
I've got a 1972 posi 9" with 3.25 gears in Tempe, AZ if you are interested

 
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