With 37-inch Iroks and only 31/2-inches of lift on this '04 Wrangler, Trevor Yoell had a pretty easy time on most of the bigger climbs. An S&S Custom Off Road cold air intake and a Spintech muffler help get more oomph out of the otherwise stock 4.0L engine. An NV3550 was swapped-in between the engine and NV241OR T-case. The stock front and rear Dana 44s have 5.13 gears swapped onto the stock Rubicon lockers. The high-fender fiberglass hood clears the tires, but Trevor relocated the battery inside behind the front seats, built a custom aluminum battery tray, and re-routed the battery cables.