To allow the use of 35s up front and limit up travel and tire rub we fabricated some bolt-on brackets to install poor man's air bumps. The Prothane coil inserts come in 10-inch (PN 19-1704) and 7-inch (PN 19-1705) versions. The inserts slip on to a small piece of tubing that bolts to the front axle's spring pad. The BDS 4 1/2-inch coil then goes around the insert. For the top of the Prothane part, we fabricated a bit of tubing welded to some plate to give the factory bumpstop a flat place to hit when the suspension compresses.