Stovebolt.com is the best site for finding info about your truck .... patience grasshopper wink
to investigate car transmissions, maybe check the shop manuals here - also check the "resto-pak" PDF for 52 to find what was available and dimensions

1st question is, why are you considering the change?
then, what makes you think the era car trans would be easier to find?
do you have all the shifter parts, including a column that has provision for mounting the lever and shift box on the lower column?
have the correct rods to mate any 3 speed to that shift box?
usually the car vs truck trans have differences is those shifting parts, so you're looking for parts from different places - easier to find someone like Gene who took the 3 spd out of their truck so you get everything involved to do the conversion all at once and you know they'll mate

Bill




Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics