One more week and daylight savings is here - can't come soon enough. With spring coming, I'm thinking about porting the heaton. Right now, its a simple 2.80 pulley. What is the max steggy port I can go with and keep the STOCK fuel system. I have heard up to 15psi. I just don't have money for the KB pumps/injectors ect. I have the colder plugs and the SCT mass air meter. Any opinion/comments/directions are appreciated. Thanks!