Someone on eBay is selling a NOS 67 Dart heater bezel with radio delete. If it wasn't so pricy I would buy it, I can't imagine that there are more than a few of them in the world let alone ever made.
I wish I still had the build sheet. I found mine and stupidly stored it in the glove box. It got so dry-rotted that it disintegrated. Now the only thing keeping the originality of the car is my memory. I know there are repop bezels that you can buy from PG Classics, but mine is the only one they DON'T make.
re: the map light, it mounts just under the glove box. It is currently disconnected, and it's been a long time, so I don't have specifics. I also believe that the car may have originally come with a glovebox light, but not positive. It does have power steering, but no power brakes. I'd like to add a brake booster, but that's for another time.