i have a 4.8 that im swapping out to a 5.3 do to the 4.8 loosing oil pressure. i need some opinion here. i have enough money to either put a tr220 cam and tune on the 5.3 or longtubes, y pipe,air intake, and tune. which would be the better bang for the buck at this point. eventually i will do the other but just can't do it all right now. this truck is a excab 2wd daily driver and already has transgo hd2 shift kit and nx wet 100 shot. any opinions would be helpful. thanks Travis