Help me identify this brake drum

... but the center register is too big I would consider making a hub ring,....

I made some for a 15" Chevy II Centerline on my 5 on 4 axle. The hub ring was mandatory for me to drill the 5 on 4 pattern. I ID'd the Chevy register and OD'd the Mopar register and ended up making a brass ring that was a perfect fit on both. I punched the ID of the centerline at 3 points making little gouges and the ring sticks in there pretty good now. For a Ghetto bolt pattern redrill on an old drill press, it came out pretty good, no runnout! Can still see my measurements....