C20's leaf/TA split

[Ziegelsteinfaust]

I maybe part of a group buy on a hoarding situation where there is a nice 65 Chevy C20. Complete no engine/tranny.

The person who found this has gotten a 72 El Camino fornstupid cheap, and wants to get some more parts too. Plus has a another friend looking at some other car.

So out of general curiosity what is the split on leafs vs TA suspension from the factory?

Not that I care really as each has its advantages, and if he can make it happen I will throw my money down regardless.