If the lug nuts are corroded to the point you can't turn them I would not worry about saving the studs. They need to be replaced anyway. You don't want your life and the lives of others threatened to save a couple dollars worth of hardware.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more... It's true. I really don't do anything but browse the Internet looking for trouble...