The head unit came out of an Oldsmobile, I think I was told it was a Silhouette. The physical mounting does not look to be a problem, just the electrical connection. I know that Delco has carried similar adapters in the past: The connection on the back of the 1989 Delco units changed from the harness used in our 1987 vintage. Yet I bought from the dealership an adapter that plugs into the back of my 1989 radio and plugs right into the harness of my 1987 Regal. I think that the 1989 connections stayed the same right up until about 2000. Then it changed again to two rows of 12 pins in one connection bus. My first thought was to just clip a harness out of a junked car, solder it up to the adapter I have for the 87 wiring, and off I go. Except that finding a 2001 vehicle in the junk yards around here is about as likely as finding a Turbo Regal.