Help needed! Stock drum? studs on drum? off of different car? 1972 swinger

Scarebird definitely has one for the 9" spindles.

The Wilwood kit won't work with any of the factory rims.

In looking at it the SSBC kits seem to all be for 10" drum spindles.
Yeah that's the other one. I thought there was but I couldn't remember. I ain't sure I'd use the 9" spindles. They're pretty small.