one thing some people dont really understand about underdrive pulleys is that you are underdriving your waterpump. this means less coolant flow and you run the risk of overheating your motor. it can be just as effective to get an electric water pump that will free up some power. i have seen many people make their own intakes with some tubing from hardware stores it may not be as flashy as the AEM but it gets the job done. do a header off ebay get freer flowing exaust upgrade the ignition and since you wanna put forged pistons and rods in it hook up a 50 or 75 shot of nitrous for that extra boost when you want it. when you wanna get serious do some work on the head get a racing cam and roller rockers have a port and polish get a thiner and stronger head gasket to increase compression. but during this whole time remember that you motors strongest point is its weakest link so makesure it can handle the power you throw at it. let me know what you plan to do.