Worth the trouble?

I think you're looking to get cool sounding stuff, but overlooking the problems you've created by doing that with what you have now. Spend the cash you were going to spend on pistons, rings, and gaskets on a used dual plane Performer or Performer RPM, and a used 750 carb. SPend a little on a performance ignition or to curve the distributor you have. You can get much faster without adding more mismatch.