As I'm looking at it. Picture #2 looks to have a "shoulder" on the inside, the exact same size as the center hole on the drum. My money's on your last suggestion, Jerry.
Good call!

@OhioSteve. Welcome to StoveBolt! Nice to have you aboard, OhioSteve! smile

Chris

Last edited by Detroit Iron; 09/04/2019 7:30 AM.

'64 Chev C20 LWB stepside (Ol'Blue)