I have something slightly different, a 79 Mustang hatch that I run land speed events in. I have been 203 in the mile and 214 at Bonneville. Its an old 358 Ford engine with C3 heads, a toploader 4 speed with a Gear Vendors O/D and a 3.73 8.8. It is a production class. Carburetor, I/P, light, horn, wiper motor, etc. We are allowed an air dam. The Blown gas altered record is only 219 which gets me to thinking. How much help are wings on the back? I don't need downforce so much as I need less drag. The 214 pass had the engine at 8040 RPM and it felt to me like there wasn't a single HP left to overcome the aerodynamic drag. Calculations say I would need another 60HP to go 1mph faster. Maybe a used supercharger, 5 lbs of boost a wing, skirts and a belly pan and who knows, maybe the 4400 lb Fox can go 230..