I realized that I still need to install some sideview mirrors while doing the bodywork. I like the look of the Mustang mirrors although they don't fit as perfectly as some people have stated on other posts that I have read. The Mustang panels have more of a 90 degree swoop to them than the Firebird, so I made some gaskets on my 3d printer to fill that gap on the bottom of the mirror mount area. I also made some backing plates from metal instead of welding in a bracket. I felt this works just as well, and I don't have to weld on the galvanized metal that is inside the door panels. The mirrors have the blinker lights built in and defroster. I may not wire in the defroster function as I don't see myself every using it.
I like the way those turned out. Just wondering if you could give me a bit more detail on the door modifications to make them work. I have a 69 Firebird I’m wanting to do the same. I appreciate any advice you have. Thanks.