A flexplate would work too, although it isn't quite thick enough to make up the entire space between the crankshaft hub and the torque converter mounting plate. The hub spacer could solve that. Either way could work.
I'll have to look at my notes on the bolt pattern. I don't think it matched up with anything as I was hoping to use an adapter flexplate from Mopar small block to GM automatic transmission. But I don't think it was going to line up exactly.
