Just a word of caution if you're buying a used Wrangler especially a TJ series: Be sure to inspect the frame for rust, not only the outside but definitely the inside of the frame rails especially near the transfer case skid plate. The frames have a lot of ways to get water, salt, sand, and mud into the frames thru holes (tie down, etc.), but no way to get out. There are no drain holes on the bottom of the frame, to allow the crud to wash out. What most Jeep owners do (at least ones that are in the know) is to drill a hole in each frame rail at the low point. You will be absolutely amazed at how much gunt will get washed out with a hose.
Doug