Ok on my new BBC 540 i am putting the 335cc afr cnc ported alum heads. I plan to run 7 to 9lbs of intercooled boost from my procharger. I want to run 93 oct. will 9 to 1 be to much comp. For that much boost? afr said you can run 1 full point higher with there alum heads without detonation because of the fact that they get rid of heat so much faster. Any thoughts. Should i lower comp? Any help would be great.