Master Cylinder Piston Retention Clip

One kit is Neihoff K46377 for 65-66 Chrys/dodge/Ply
One is Neihoff K39142 for 60-66 "A" body
The kits are different, but both have the stop that bolts to the MC, and the boot. The pushrods are different, and I didn't check to see if the pistons, and/or valves are the same or different.