I need to order the rebuild kit(bearing ,bushings ,sync's , seal and gaskets) for my sm420 but do not know the right year it is. One kit goes from 47-53 and the other goes54-61. One the top rear of the case there is a serial # stamped, it is VP-93661. None of the codes inthe Chev . numbers I D book list a VP. On the drivers side in cast numbers is the #591907. Can anyone decifer these numbers and let me know what year it is so I can order the right kit????? Thanks in advance
