I'm sure there's a thread on here but my searching isn't finding it.

I'm fitting all the front body parts to make sure I understand everything and know what order to install things once painted. I note that both of the fenders I have that are good have a bracket on the cab and a hole on the fender brace to attach the lower back of the front fenders. But I cannot figure out how to actually attach the two. Was the fender supposed to have a nut welded to the brace? I think I saw a video where that was the case. Neither of my fenders have that although there's no damage or rust so I'm unsure.

I have two other fenders that are in bad shape, one is fully rusted out, the other has a bolt that's been welded to that location. So it's no help to me either.

How do I attach the lower back of the front fenders?