I can't comment on the original question since I've never had that issue (stock 4x4 status here), but I DO have experience with jacking up VERY low cars. Just a tidbit for you since someone else mentioned it; I find it easiest to back the car onto ramps then use a regular jack to get the front up since the ramps increase the clearance up front. Of course, if you're extremely low, you have to do this on a sloped driveway and back UP the driveway so you don't scrape the bumper.