Replacing sway bar nuts now what

I guess I didn’t think hard enough and fished these bolts through where the welded nuts were (prev. Owner got an extractor stuck in them when bolts broke) but the bolts spin freely when I try to tighten them

I guess I didn’t think hard enough and fished these bolts through where the welded nuts were (prev. Owner got an extractor stuck in them when bolts broke) but the bolts spin freely when I try to tighten them