Degree wheel question

I have one that has a SBC sized hole in it. I faced off an old SBM crank bolt and I think it’s a 1/2 hole in the degree wheel so I tapped that bolt 1/2 inch and I just bolt the wheel to the crank bolt. Any crank that has a bolt bigger than the hole in my degree wheel I just get the right bolt for the crank and drill and tap it.