Thanks Stuart; I called Novak and they said they have no way to tell by the numbers I had. The motor in my 51 is out of 1957 so I looked at the serial numbers for 57 trans and none of them are at all alike to the one one mine. The V in the serial # is really throwing me. Can anyone else give me a clue, could it be ouit of a GMC??? The guy rebuilding it says the syncs are alike so that would indicate it would be 54 and older, but he also said there is no neopreme oil seal so that would indicate 53 and older. Confusion!!!!!
