The truss also allows for wheelbase adjustment thanks to the slot in the truss and the weld-on spring cup. Since we are planning on lowering the Jeep in the future, to better allow the axle to clear our exhaust that wraps around the front of the oil pan, and to keep the tires out of the back of the wheel openings, we opted to push the front axle forward the full available 11⁄2 inches.