70 dart fender extensions

The units I have are pot metal and the studs are in need of repair. I was hoping that someone hear might have repaired some and be willing to say how it was done. Instead I have people tell me they have lots of fiberglass ones with studs which are correct but nothing more. Just a bit disappointed here, there are no holes to jb weld studs into, anyone have a set of fiberglass units they would part with? I am ok with fixing damaged fiberglass, just don't know how to repair pot metal!