I think you might be able to get a port job, head milled and that exhaust for around 400 dude. that would be a whole new quad. ton's of new power
yeah hopefully i get my kart sold someone is coming this week to look at it if he buys it i will have the money i can get the toomey b1 from blaster200boy and get it ported by ken that will be around $310 and where can i get the head milled i dont see prices on kens site or is that the same thing as maching head surface?