Can`t see any reason why you couldn`t change the body mounts without pulling the body. As said i`d replace one side at a time. Just make sure to unbolt all solid mounted places so as not to kink anything, in other words jack it up slowly and watch for any places not wanting to come up easily.
A forum community dedicated to 1955, 1956, and 1957 Chevy owners and enthusiasts. Come join the discussion about restoration, engine swaps, reviews, performance, modifications, classifieds, troubleshooting, maintenance, and more! Open to all models including Belair, 210, 150, Sedans, and Nomads.