I am running Long tubes with a 4 1/2inch front and 5inch rear drop and I have to be careful with speed bumps even going up into my garage slight incline the cement is uneven by alittle and hits the collecter,My temp fix is a 1/2inch piece of plywood that I drive up on the passenger side each time I go in and out of the garage
. If I knew how to weld I would cut 1 or 1 1/2 inches off each tube of the headders to bring them up, I think thats all I would need.