Fieros are so lightweight, give them power and they fly. However, the only decent tranny for them is a Getrag, and if you're not careful you can grenade them with the power of an L67... let alone V8 swaps.
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne