Transmission swap
my 66 came with tri power auto 3.08 gear what a slug, put a muncie 4 speed in back in the 70,s what a differance I could now spin the tires, putting in a 5 speed is a little more work, you have to cut the tunnel and raise it a couple inches especially if your using a tremac, did mine will have the new motor done soon {421} can't wait. jd grim 66 gto
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