I recently purchased a 1991 gt. It came with pulleys, intake, hooker headers, hurst short throw, 3.73's, and a 3 core aluminum radiator. I want to make a few more upgrades. I have read that a throttle body, 70mm MAF, and a fuel pressure regulator would be a good place to start. I am open to suggestions. I have knowledge of the inner workings of engines but am not an expert. Lets start with a $500 budget. I have seen all these parts on Ebay (namebrand only of course) for around that much. Many Thanks!!!