I have 2 1.5 ton cheap jacks from K-Mart. Since I do not use them professionally they work great for me. For the rear I jack at the cross member right at the engine and trans area. From the back of the engine, it is right at the end of the skid plate. For the front, I jack both sides at once and I place them either under the jacking points after I remove a jack or the suspension where there is a bolt coming down. If you notice, this is a connection point for the suspension to the frame...good and sturdy. I do not believe the weight on the front is enough for any kind of damage since this is a connection point and is already under a lot of stress from daily driving.