1985 626 non-turbo

Hey all how's everyone doing? I haven't been to this forum before but I was very active in the Silverado forum for quite some time. I just bought an 85 626 from a friend of mine for $400 just to have something that gets a little better gas milage than my truck. I'm pretty impressed for it being a $400 car but there are a few things that I'd like to get fixed on it. First off, does anyone know where I can get an aftermarket dash install kit for this car? It still has the stock radio in it and I can't find an install kit to save my life. Secondly it's got power windows and a power sunroof. The front seat controls for the windows are in the center console instead of the door frame. All 4 windows work....unless it's hot outside. I live in Nevada and it's been hitting over 105 for the past couple of weeks during the day. When I leave in the morning it's still cool and I can roll the windows down, but I have to leave them down all day until it gets dark before I can get them to work again. Anyone else ever have this problem? Also the driver side tail light is busted and I'd like to find a replacement part for it. I've looked every where I can think of online to find parts for this car but there aren't many available. Are there any secret sites out there for parts??? Thanks in advance ya'll.