Looks like you've done right by that old Mirage. I also scrounged up a gold one from about the same year, but it was a basket case. It turned into my first fixed-gear project and is now Piper Cub rustoleum yellow. I've probably put close to 1k miles on it over the last couple of years. Though it's battleship heavy, I've always been struck by the comfortable, smooth ride. It makes a great commuter.