Basically I want to try to increase the reliability of a 750 motor at high RPM on a budget. I know that lightening a piston sounds like the opposite of increasing the reliability, but cast pistons are not all that well finished. Even if I can only take one or two grams off of the pistons reliably then it would still decrease the force on the bottom end quite a bit at high RPM's. I know that the bottom ends tend to be a weak point on these engines, but I don't want to buy Carrillo rods on this motor. I don't expect this engine to run 14,000 RPM all day like my race bikes, but I would like to not worry as much should I get it up around 9-10,000 RPM once in a while.