yeah he's right for that, but yo you can get Forged pistons with better rod per stroke ratio's so the pistons could hit a higher TDC mark, get new valves, or tune your head to a better valve lash and clearance to go with that piston replacement and get an aftermarket head gasket that can hold it's own weight in controlling compression and is thin aswell. Then it should be a little more sicker for you, or replace your shortblock with a LS, GSR, or B20 shortblock and drop that head of yours on it and see what happens. Then, you'll have a little beast of an all motor setup.