My buddy Verne recently asked a bunch of us at the office how much we thought his 4-cylinder TJ weighed. I guessed within 40- or 60-pounds of its actual weight. I'm about to make some mods to my YJ that will probably add a bit of weight, but I wanted to get a base line to start off with.
Currently it has the stock 2.5L engine, a swapped-in AX15 tranny, NP231 with slip yoke eliminator and 3/4-inch chain, Tom Wood's Custom Drive Shafts front and rear shafts, 30-spline shafts in the Dana 30 and Dana 35 axles, a Superior truss on the rear axle, and 2.5-inch lift springs and five 31x11.50R15 Swampers on aluminum wheels. It's also got some aluminum rocker armor, Bestop seats, a Bestop Supertop, and a Warn Tabor 9K winch on a Smittybilt winch plate.