Old Volkswagen Beetle jacks made great bodywork tools. They had a solid round shaft body, and the part that lifted your car walked up or down the round shaft as you worked the lever. It was a simple thing to make up a series of different lengths of pipe that just slipped over the end of the solid round body, with different shaped ends welded to the pipe.---Bingo---instant poor mans "port-a-power". They worked great for pushing out dents and sprung metal. You could also weld a chain hook to the base of the jack and to the moving part, and those suckers woul pull just as strong as they would push!!! I still have one in my bodywork cabinet.