last time i tryed i got 1 response which really didn't help me. I am going to buy a 330cc big bore piston with circlips and rings hi-performance gasket,rev-box,dynojet jet kit, K & N hi-flow air filter do I need to buy a new exhaust system right away? I was going to buy one anyways but i need to save for it or do i need to save and buy the exhuast with the kit?thanks

 

The easy answer is NO.you do not have to buy the exhaust now!..........it would be better, but it will run with the stock on there

 

on anything i get the stock pipe is the first to go.