Chinese brake drum issue???? HELP!

I'm stumped....sorry :dontknow:

Most drums that I've seen have that "bit" of a center mounting lip. And yes, the Chinese brake crap has taken over the industry, but I'm still wondering...:-k if it's a wheel problem.

What is the center hole diameter of a Diplomat wheel and is it the same as an earlier Mopar wheel...? Anyone know.....?