34 pj, cpi inframes. that's what Dan said to use. His jetting advice was spot on, I couldnt believe it. It started right up and pulls clean from bottom to top. The low end power is unreal, it has more bottom end then my yfz and still has amazing top end. I was just breaking it in and racing my nephew on the yfz and I didnt have to rev it up and dump the clutch like usual, I just took off like I was at a stop light or something, and it will jump ahead of the yfz bad. Even with ported stock jugs I could smoke him in a drag race but he would get me off the line, but now it is not even close, not even in a short race. It does awesome wheelies too, I can bring it up going slow (with no clutching), just like a 4 stroke. I am so happy with it, I just wish I would have known about A&S before.