Just about to do another FMX / FOM conversion. I have to ask a question ??? Is the input shafts the same on early 54 FOM as late 57 ??? I sold the 2 spare  late model FOM I had ,now I need the front shaft from one . A mate has an early 54 auto that I can have .Just want to make sure before I send them off to be rebuilt .I have a late model convertor and a front pump . Still chasing a late model flexplate .

Lon

yblocksdownunder