Yes. Not only to 'load the chassis but also for access. Or if a lift isn't available support the car at the rear axle and at each front lower control arm. Before raising the car, measure and record distance from wheel well lip to ground at all four corners. And after raising measure again and insure all four corners were raised equally. For example: If on the ground you had LF-25.25", RF-25", LR-26.5", RR-26.25" and after you raised you got LF-35.25", RF-35.5", LR-36.5", RR-36".... You'd have to lower the RF 0.5" and raise the RR 0.25" to get an even 10" lift. It doesn't matter how much you raise the car as long as it's and equal amount at each corner. And you must take measurements in the same spot you are going to raise the car. Also if you are doing this yourself not only do you want plan where you are going to make your welds and sand down not only the paint but the galvanized coating of the sheetmetal. And when you do weld wear a real filtered air mask to insure you do not breath the fumes of welding on/near galvanized metal. I have the Hotchkis kit and you can really feel the difference the reinforcement makes.