i thought about doing a scoop under the bumper to direct air up like that. I took the bumper off my old suburban and its just sitting in the garage and everytime i see it i think more about just modifying it to work lol. FellowTraveler, do you have the winch on top of the bumper or inside? I worry that with the winch on top of the bumper blocking some of the radiator and no holes it would just be too much to make up for. What is that cooler cooling? Do you have any more pics of your truck FellowTraveler? sounds like you have alot of stuff id like to get. Its hard starting over on another truck after doing quite a bit to my last suburban. It will be worth it though to have the diesel.