Decobraman,
Get a copy of the Desktop Dyno program. It won't be perfect but it will be close on horsepower. I use mine quite a bit and it normally reads within + or -10 horsepower to the real dyno pulls. However the torque readings are usually quite a bit low and I haven't figured out why yet. You can play with it by changing heads and such and see what gives you the most for the least. I think several of the guys in the club use it.
Ron
