DAVE!! dude you're the man!! i know that comp cams site doesnt have even close to the variations there are out there but i still love it! thanks for letting me know about it!! thats all i've been playing with since i downloaded it! its difficult to make under 500 hp.. ok its not difficult but it sure is easy to make over 500 with the big block! then on my small block i changed out the heads and the exhaust manifolds and made almost 470 horse with it!