I was thinking of buying a jeep wrangler and had a few questions. First Is the 4.0 more reliable than the 4.2? How much lift is required to run 36" tires? Is the Rubicon Express spring over lift a good modification, or should I stick with spring under lifts? Do the '92 - '95 Wranglers have shoulder belts in the rear? Sorry for all the questions, but I'm going from a Toyota to a Jeep so I don't know alot about Jeeps. Thanks for any info.