The differential 3rd member from that era car will not fit in a truck. You could swap the entire housing out but would require repositioning of the spring perches. The car also uses 5 lug wheels vs 6 lug for the truck. You will also need a V-8 flywheel, front mounts, and V-8 throttle linkage for the conversion. Nothing from the 235 interchanges with the exception of the clutch which depends on which flywheel you use.
Fred
