I would call Jeff at FAST or Kevin Herr of Herr juggs for your porting needs/questions. Both are site sponsers. I would imagine a good dune port would be what you're looking for. As far as cost savings, think about it this way, instead of buying completly new cylinders and pistons you're just getting yours done along with probably some new pistons. Do you have a cool head yet? If not get it all done at once, if you have the funds. Dave Noss is a sponser here as well and he makes outstanding heads. Bud, if you get the porting, carbs, cool head and advanced timing plate you'll think you have a whole new bike. Oh, and thanks for your service to our Country. Outstanding.