Don't bother with just 2. Buy 2 pairs (4 total). When working under the car, put the whole car up on jack stands. This distributes the weight onto all 4 stands. I have no idea if the rating is 2k lbs EACH, or per pair. In either case, make sure it's got some heft to it (thick legs and post, and especially the locking mechanism). I believe it's 2k lbs per pair, so having 4 should be safe since the car's weight will be evenly distributed (assuming you're on level ground).