want more power from my 318...

STOP! There are things wrong with it. Dont run it. You need to replace that rocker immediately... and any others that are messed up. There may be a member near you who can give you some. I'm on the wrong side of the continent. Also, the exh valves have rotators... I havent seen them before on a 318 but that might just be me... In any case, you cannot replace the cam until you replace those with std retainers and the valve springs. I think if you fixt the issues like this you might be surprised at how much better it runs... Then you can spend and get new stuff...