Yes, Drew, I know. But the car is destined to rack up a lot of highway miles. I commute in it in fair weather, go to distant shows and cruises, and drive it around like any other car when the weather is fine. The numbers matching gears (factory posi) will stay in the car.

I want to address the engine issues. I do not want it damaged by detonation. It's easier and cheaper to prevent damage than to cure it.