hey all. I was wonder if the 765 kit was the largest one you can get for the P650 or if you can go 785? I would also like to know if i would have any over heating problams with trail ridding, some drags and hill climbing. Andn one final queastion, how much would it cost me for the kit, and how much would it cost me if i just sent micky my stock motor and let him do the work to it and sent it back as a port and poleshed BBK????? I thought about going with the BF for the extra power but then i got to thinking i could just buy a BBK for mine for half the money as a BF and kill it in the drags (and most sport quads for that matter) plus i could just go ahead and buy new plastic and have a like new atv with GOBS more power for alot less... thanx