Re: 1) Most of the non-standard items appear to be some kind of aftermarket or later modifications of OEM parts. It even appears to have been repainted after it left the factory. Re: 2) Yes, you might be only one. Many often mistake neglect for "patina". Based on shown photos, this car will likely require quite a bit more than "$600 detail job" to get her cleaned, sorted and useable, but more than likely she's in a desperate need of full restoration.