Here is my setup. 74mm ITS R trim dBB, BL Tranny w/4K stall, Fuel System, AEM, FJO Wideband,etc. I plan on upgrading with HKS cams very soon. The car is only driven on weekends and occasionally sees track time at RCR. I am undecided as to whether I should run 264's,272's, or 264i.,272e. What are the pros and cons of each set up? I am not concerned with idle quality but with the amount of lag I may gain. Experiences, opinions, anyone?