SM Head Modifications on a budget

My thinking was since most guys like to have a machine shop check out their bare heads that would probably be my second stop. We have had plenty of members over the years that have enlarged “the pinch”. That I think should be the first step as many have done so. It can safely be opened to 1 inch by almost anyone with basic hand tools. So probably the first test I would like to see is opened up for a 2.055 valve with a 30 degree backcut on the intake. Then a 70-60-45-30-15 competition valve job. I’m not so sure members would feel comfortable working the common wall and removing the head bolt bulge but that would be an interesting 2nd test.