Barry,

I'm privledged every year for the last 12 years to be a guest in a skybox at the racetrack for speed weeks in Daytona Beach and have flown/met several Nascar and Busch drivers/mechanics that fly anything from glow on up to GS as well as glow powered cars and trucks.

Eddie Hill, John Force and a few others from the NHRA also fly as well.

My point is in every case the planes were professionally built running tuned pipes and cans and they are aware of the need to have quiet powerful engines. A race car is a totally different thing.