i would love to at some point...i just bought my rubicon and it's fairly stock though. Need to replace some u joints before it goes anywhere. If there's some mild beginner level trails up there i wouldnt mind going. With the supspension (or lack thereof) i probably woulndt want to get too crazy just yet.
04 Rubicon in Khaki,5-speed, 33's,RE 2" coil spacer, Bestop, K&N intake (crap)...pretty much stock.
JEEP: If your question is fuel mileage, the answer is elsewhere.