I am in the middle of doing this right now, I bought a 2002 liberty 4 wd for $300.00, with a siezed motor, apparently the owners 17 year old ran it low on oil, and kept driving with the light on!! I pulled the motor this past weekend (no easy chore to say the least). The liberty is in nice shape, 60,000 miles on it, but after close examination, the cam gear on the drivers side was snapped off the end of the cam. With this in mind, I have been getting re-build quotes for this engine. the prices are all over the place, and as an old gear head, I would rebuild any american engine, but the twin chain mercedes engineered engine is literally foreign to me. I am thinking that this is why the prices vary so wildly. I would want a shop that is proficient in rebuilding these chain motors as I call them, so, my question, Is there an engine swap conversion kit, or something out there that I could put in this vehicle?. I would really like to put a conventional single cam engine in this, out of a comparible chrysler vehicle. Any suggestions anyone?