My 68 was orginally a L30/M20 car, I have the original 12 bolt rear end still in the car with the original gears, 2.56 I think, would the gears and posi unit out of another 68 camaro 12 bolt with posi and 3.55 gears fit in my housing?
Thanks

in a word , yes. most any 12 bolt car rear< Chevy >