And here’s what’s even weirder. Some of the trans stuff and electrical stuff is vastly different between Dodge B bodies and Plymouth B bodies. So you can’t mix and match. Like the drive shaft on a 64 Fury B body sedan, 318 poly/727, will not fit a 64 Dodge 440 Sedan, also with a 318 poly/ sedan.
also the push button shifter cables are completely different lengths between the two divisions.