[RICK LAKE]

BAsque1 Lou If you are running aluminum heads and about 10.5 compression or less, stay with what you have and don't worry about additives. The best way to check the motor when running is a A/F meter in the exhaust and they used to sell a knocks meter for pinging. If the timing and the mixture are not at 13.8 or higher, you are in the safe zone. If you search around on goggle ther should be a couple of Sunoco gas stations that sell 100 octane unleaded. I don't think you can get a set of new heads with them having harded valve seats anyway. See if there are any small race tracks in the area and buy a couple of gallons of fuel. We used to use in the old days 130 AV gas. Hemi ran great but learned that AV gas didn't have the lubercation qualities that automobiles gas had. You did get great fires out the tail pipes and backfires. Bottom line, run the motor a little soft. Watch your total timing. You should be fine. IF you like that nasty smell, add a 2 gallons of race fuel. Rick L. I have FI system switch is more flexable for running gas from 89-93 depending on where you are at in this country. Also have an aluminum motor with heads to help stop knocks. Iron heads would be a different story. Rick