Wanting to upgraded my 3.15 gears "please help"

[DarkVader0911]

Check on the labor prices, It may end up cheaper to just buy the part in the link you originally posted and it will be done right. I have seen a few people post that they had problems after shops not doing the gear swap correctly.

I believe I can only go 3.55 with the full carrier going 3.73 and the mustang shop here where I live are good guys, want nothing more than to build fast Mustangs, he's not a greedy man wants 200 to install it

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[EXP Jawa]

Ford Racing lists both 3.55 & 3.73:1 carrier assemblies, though there is a bit of an absurd price discrepancy between them.