The exhaust will be run through the side of the bed with 3" SS tips cut at a 45 degree angle in front of the tires. I'm frenching in a 4.5" opening about 5-6" deep that the tips will run through. I relocated a new stock tank to where the spare was then ran a Holley Blue 110ghp pump.With the Air system, Shocks,4 link,Gas tank, Air tank and wiring I had 2 options, either run the exhaust under the frame in front of the 4 link mount or over the frame and out the side of the box. I think it's going to look better running out the side of the box and another plus is it won't get crushed if I bottom out on a speed bump or something.