There are modifications for this motor, but your looking in the wrong place. Try looking in 4X4magazines and truck magazines. As for the intake, yes your motor does use EGR. However, that doesnt mean it has too. If you get your truck "chipped" for better timing and to ignore EGR readings(assuming it has a computer read on the EGR at all) you can run without EGR. If your truck has a single line and a round manifold-based egr valve, it shouldnt be a problem for the computer. as a test, i would disconnect and plug the vacum line for the EGR and take it for a lap. if you dont get any error codes, EGR isnt sensed by the computer.