Did you mean a 3/4 inch impact wrench? If you have air, I would see about renting an inch drive to save your back. Your probably going to have to replace ever lug stud but you may be able to run a thread die down on them first, the right direction and then inverted, to cut all the way to the nut. This works really well on axle U bolts as well. After cleaning every stud like so, put some used synthetic motor oil on them. Get some, even if you have to change oil for a friend. I’ve used everything, it’s better than anything you can buy this side of ZEP 777 or triple Z. The heavier weight, the better, used diesel synthetic works the best of everything. Wear some nitrile gloves. It surprises me that they’re all left handed and 5 lug, usually left handed on the right side in that era or size. Are they 3/4-24 studs?
