Cam with full bolt-ons in my 98 Formula M6 and I pulled 29 highway Owner before me pulled 31mpg driving to florida. Plus I beat the piss out of that car and it never skipped a beat.
A friend of mine who bought the car has put over 100 passes through the quarter and only minor problems such as grenaded bell housing (doing donuts in a parking lot). Actually the car saw 28 passes in a single day. Hot lapped the hell out of it.
They also love running warm. Consecutive pulls on the dyno and each run with temperature building it picked up 5 rwhp