The explorer is an inch more narrow than stock MJ, the Liberty is a couple wider. I like the Liberty because the extra width accommodates the MJ's wide backside (that's why the rear tires always look "tucked" compared to an XJ). Both are good axles. If you're lucky, car-part.com might be able to find you a 4.10 liberty axle. They only came under 4banger gas libbys in certain years. 3.73 is infinitely more common. '02 libbys have drums so avoid those.