Really? I would like to know your recipe. Without quench, 9.3 is as far as anyone oughtta go on pump gas and iron heads. I wouldn't recommend it on my dime.
I run a all iron 360 at 11.5-1 on pump gas 91 octane with no ping, and i race it wilth 50/50 mix and it depends on maybe where the quench is, and a good cam makes a differance.