My MSP was one of ~2500 and one of ~500 blue ones. It had a 450 Watt Kenwood stero from the factory with MP3 player, upgraded suspension, turbo, seats, shifter, steering wheel, brakes, etc. Mine was the only MSP I know of that had a full race suspension with camber plates. I sold it in November though.
The cars I've been driving at work have a lot of unique features...The diagnostic modes you can get into on the dash is one thing, but I was in one car where you could run 0-60 times, and most of the new DaimlerChrysler stuff has real time tire pressures on the dash.