Well, I'm finally done. I live in a high-rise apartment building with no place to work, so what I have accomplished here makes me very proud. The old Brat seats were super worn and dirty, and very uncomfortable. I picked up some Daewoo leather seats at the junkyard and retro fitted them into my sweet ride. They have worked out perfectly, matching color, and the driver side has built in mechanical tilt control and lumbar support. What do you think? I hope I haven't desecrated the sanctity of the Brat!
Here is a pic of the donor car.
These are the seats in the Daewoo.
I had to drill through 36 of these crazy hard rivits so I could bolt on some angle bar to mate up with the existing seat sliders, I felt so bad for my neighbors having to listen to my drilling racket.