Maybe a dumb question... . I dont want a lot of smoke, so would a level 1 injector be a good choice or stick with a box? I have an Edge Juice and not super thrilled with performance. Wanting a little more just not sure of the next step. What brand air filter kits are you running and pro's/con's? Will the Borla exhaust kit for the 04 quad cab short bed fit my 03 quad long bed if I make or add my own extension pipe? Or is the down pipe off the turbo different?