Trail Tough has a kit specifically for running 35" tires. Screw their "undertaker" though - get the shogun, or Kicker III (runs a samurai case behind yours) and it will re-gear you PERFECTLY for big meats, give you low & double low, and even more low if you replace the stock t-case gears. All said and done, you're looking at a big $$$$ layout.... then again - costs less than a stock Jeep.... it's all relative I guess.