After letting it sit for a while, finished my 99 cupholder mod with a 3D printed switch plate, so that I could keep the window control there and add more switches in the future:
Not quite a perfect match, but better than the gaping hole that was there. The handbrake boot is also custom, made from a thick piece of silicone. I didn't like how much crap I found down inside the console when I was cleaning out the previous owner's scunge, so I made the boot to keep that crap out.
Also, my camera is still a potato, but it's a slightly better potato so I finally snapped a shot with my custom HUD + compass + DIY scangauge setup:
The HUD is the digital display in the upper left (0 mph, as it should be in my garage, and the vertical dash is the compass indicating East), while the MPG + voltage + temps is the off-color square in the bottom right, below the radio HU.
The TFT screen I used for the bottom left isn't bright enough, so I'm going to replace that with an OLED at some point, or change the whole setup to use a headless unit that talks to a Nexus 7 or something. Fun stuff to play with.