Just use a floor jack on the k member and lift the car up some. You dont have to lift the wheels off the ground. Just lift it enough to take pressure off the lower control arms. And remember you have to bounce the front end up and down to relax it after each adjustment in for up and out for down. Then measure all 4 corners. You need the correct tire pressure in your tires , and a flat level surface. Remember that your only squaring the body to the conditions you have right now. Say if you have tread wear on on tire making that tire a bit smaller in diameter then the others, then it affects the whole setting of your car if you think about it. To see what I mean, set your car the way you want. Then measure all 4 corners in the center in your wheel lips. Then let just 10lbs of air out of one tire and measure again. It will all change on you. So remember you are only doing a visual adjustment on your car is all. There is actually a procedure to do it right for the settings, and if the car isnt setting level, then you start looking for worn parts like leaf spring sag, bushings, tire wear, frame twists and such. But for the most part you will be happy with what your doing