Im guessing youd need machine work done to the crank case. the part #'s are diffrent for the crancks as well as the cases.
Wrist pins are smaller on the 7. I know Legend Performance makes a nice 700-800 big bore for non valve motors.Yea it looks like I will be resleeving. I talked ot the guy today but he didnt like the idea of resleeving for some reason. Oh well he is on it.