My CA18DE 1200 just pipped a stock Commodore VL Turbo. The CA18DET version was always disabled in some way and wasn't much good. My Bro's SR20DET (100% factory) powered 510 left a 308ci VP SS Commodore for dust. And the Commo WAS trying.
My project 1200 will beat 99% of all street cars, and all production cars.