Saw that jeep in person this weekend. Russ is a friend of the family. Its a really clean job. He has some body rust issues to resolve. He admitted that the diesel doesnt have any more power than the 4.2 but the MPG gains are remarkable. I think he needs to get a better intake, currently has a cone filter under the hood. I think a snorkel or a air box on the front fender would be a good idea.