Robert it has been forever since I played with Firebird fenders. Are there nuts supposed to be welded in around the lip of the inner fender like the Camaro ones I have now? Or did they use those clip-on U-nuts? I seem to remember the clip-on ones for some reason. As I inspected the inners that exact thought struck me- are they in the right places? As you said, not a huge problem to move them where needed. Or, just drill holes and use the clip-on U-nuts like these.