Exactly. Look at the weights of the old versus new pistons + pins + rings. If they are the same within a tolerance, then you are good to go. If they are different, then there are ways to make them work without a complete re-balance... within practical limits.
NO , I'd have to go to the shop to get the specs , pistons are exactly the same with the new being 13cc dish the old 23cc dish so a touch heavier , guess I'll balabce it again even if is only + 4 or 5 grams a piston
