I used a bronze drift punch, but looking at the abuse the nuts already had,... Screwdrivers, chisels, whatever seems to work juuuuuust fine, ish,...
If you can get one off try your local NAPA & see if they can order you the correct one. I have seen a couple at the one here, just not needed since my nuts are already trashed.
1956 GMC 370 dump " 'Tater "1970 VW Volksrod "the Black Bomber"
2007 Chevy Avalanche
2020 Jeep Cherokee Trailhawk,
2005 Harley Davidson FLHTCUI
I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion! :P