I'm replacing the rear shackles and bushings on my 1950 Chevy 3100. The steel bushings are really stuck in the eyes, on the frame and the springs. What is the best method to get these out? I do have a acetylene torch...heat the eyes and keep banging away? My other thought would be to sawzall through the bushings in couple of places before heating. I would be thrilled to have someone come and show me how this is done!