My 75 Finally Gets The Attention It Deserves(This Could Take a While)

My last post was in April of 2021. Pathetic, isn't it? Not much happened for quite a while as life got in the way big time, but I've started back up again trying to get her ready to go in for body work and paint. Unfortunately the car has at least five previous layers of paint and I don't want to add another layer to it, so I'm in the process of sanding it down to a mixture of the factory primer and bare metal. I'm also removing everything from the outside that doesn't get painted, so all trim, bumpers, door handles, marker lights, etc. The last time I did this to this car was in the mid to late 80's when I was in my twenties, so a while ago.
1975 Plymouth Duster w Front Bumper Removed.jpg
While taking the bumpers off one of the mounting bolts for the rear bumper snapped in half. You can see it in the image below along with another one that in spite of the rust is still in decent shape. I'm going to need to find a replacement for that. Does anyone know if these are available new, or will I need to find a used one?
!975 plymouth Duster Bumper Mounting Bolts.jpg
I also discovered that one of the AMD patch panels for the lower rear quarters is incorrect for my year and will need to be replaced, but I no longer see these listed on their web site. I may have to get the entire quarter and get what I need out of it.
1975 patch panels.jpg