I want to put a high compression pitston (Wiseco) and maybe a cam, I have a HMF slip on exhaust, can I do those mods with a stock head pipe, if I do what will it do?? I can't find a HMF head pipe for it I am pretty sure they don't make it. Tell me what you think.

 

is that the best piston?

 

maybe it isn't??? I think that is what i have decided to go with.