2.5" OME suspension with HD front springs for the diesel and medium springs in the rear. Nitro shocks because I'm not re-engineering the wheel... ARB already made it work perfectly fine. I had lift shackles on the old truck and they rode bad, these shackles are stock height but cadmium plated greasable poly bushings. Also found it it's a very good idea to extend the brake lines, I did all 3 stainless because the fronts were too tight at full droop. Tires are 33 by 12.5 and they have lots of room to move... I did however lose a front mudflap somewhere it got pinched between the tire and the side step.