For my 1200 coupe way back at SCCA drivers school I Ran a stock motor with 3.90 rear end and 185/60 13's. The car would do maybe 6000 RPM and about 88 MPH range.

Currently with GX Cam , H-production head , 37mm / 30mm valves , dual valve springs , header , 2 inch exhaust and 32/36 Weber - the car will pull 8100 RPM although I shift at 7800 and best speed on a really fast track is about 110 MPH downhill. Most tracks I see about 98 MPH.

Tom