What is the difference in the early (up to '95) and later ('96 and up) r150f's??

Can a pass drop TC be bolted on the later r150's? I know it needs to be chain drive type either way, without an adapter for the gear drive.
Thanks

 

Input shaft and bell housing depend on engine.
Output shaft, I have read 23 or 26 spline (Toy used 23 spline)

Toy to toy the VF1A should bolt right up.