Hey DF: That was the plan, but then I figured out how deep the notches would go down the sides of the bore; the notch depth for the cam lift I want is such as to get very close to, or even into, the travel of the top piston ring at TDC. So it is a ring-travel-to-notch interference issue. So the options are:
smaller valves, or some combination of that plus other methods, to eliminate the bore notches
lower lift to make the bore notches less intrusive
larger pistons and bores.... (But my next piston choice that does that failed in a couple of ways.)
Yes, sir, that is another option, and I have been looking at iron heads today: I have to dig into the Speedmaster 1.92 flows versus the other options. The LA-X is another choice.... but they are out-of-stock all over right now, of course!