a833 tailshaft interchange

I am building a 50's Dodge truck hot rod and using a a833 trans from an early abody, ( 69 Cuda) but the shifter sits too far back on the tail shaft, I have a a833od from a mid eighty's Dodge van that has it's shifter mount location in a more ideal spot so if I could swap the tail shafts it would solve my problem, I am guessing these wont interchange, any thoughts?

What bellhousing are you using, one to fit the 69 "A" body? You can swap the tailhousing and Mainshaft from any "B" or "E" body to your 4 speed. Your truck tailhousing will also work but you will need a "B" or "E" mainshaft. Just use the bearing for your tailhousing.