Does anyone have any experience with raised ports on the ultra 150?

i.e what result to expect om a stock engine?
i plan to run stock heads at first, maybe ada or r&d readheads later..

btw i need a top end gasket kit, piston rings, and a head stud?
any recomended shops??

(had to take all studs out to cut the cylinders, and broke one of them.....)