With your current mods, all you will need is a Si-trim or S-trim, 60lb injectors, a walboro in-tank pump, and a power pipe. The car will put down between 450-500rwhp with the stock pulley. No need to increase the boost. Just make sure you get a chip burnt with a good dyno tune and you'll be set to have some fun. You will be at the upper limits of your block at this point so keep the rpms down and I would recommend a aftermarket ignition box with a rev limiter to help keep the setup safe.