Cruiser - I love doing porting, you will not believe the difference. Let me know if you start and I will lend you a hand if you need, I have been doing porting for a long time. Ever heard of (FMF), I know Donnie and all the boys from the big tuning days. The fella that has the full suspension tuned bike has a reed block on his but he has not put the holes in the piston yet, I explained what he needed to do, he said he was going to try that mod. That is one of the most important changes for a slow revving two smoke, I think it would give the most low end possible, and I know a trick to get two extra ports out of it. Have fun Dave