I have the normal 9.2:1 1968 350 in my coupe. For now it is pinging on anything but 93. I figure, shoot, if it's gonna use 93 at least let it be a higher compression engine.

Assuming that a head swap would do this for me, what heads would do the job? (When you stop laughing AT me, read on.)

Could I just mill the heads (deck?) a few thousandths and raise the compression that way? Is the higher compression asking too much of my two bolt mains and 37 year old rods?

Am I an idiot that should just buy a 400 HO engine and stop doing it half-a$$ed?