tracker it sounds like you might be in a little over your head. you should sit down and do a little research before trying to go at it with paper.. you will find out VERY quickly this isnt to correct way to go about it. doing it your self is awsome, as long as you have the knowledge, the know how and the tools and time to sit and learn, and be prepaired to ruin many cylinders so perfect the art of porting. Becsue its just that. an art. its not just something you get out paper and smooth away the casting flaws... unless you plan on making changes to the port timings and port angles, your probly not going to ee any differance. how ever on a side note, remember that on the intake track you dont want it to be smooth. you want it scuffed up... this helps atomize the fuel