I seem to recall that originally the cars had a bit more HP. My 53' 216 truck engine was only about 96 HP or near that but the cars were around 112 or so and even more with the 235 and PG. Other than that I suspect that with a 3 speed tranny the drivelines were the same on the 1/2 tons trucks. However the rear ends were different and the cars had a higher gear ratio.
Someone here will know for sure.
Going to offer up that old inline huh' and replace it with one of those bent motors? Shame, shame...a pox upon your toolbox! You do understand that your monthly dues here will triple and you'll need a special password to enter if you do the "V" thing, don't you? :p