Parts that interchange between the ROA and 3 screw?

[AbitNutz]

I'm curious if there are any internal parts that will interchange between the ROA and the Old Model Blackhawk 3 screw.

In particular, the cylinder latch bolt, cylinder hand/pawl?

 

[CraigC]

The hammer, trigger and bolt screws. Grip frame, grip frame screws. Pretty sure the bolt will interchange. Not sure about the hand.