I just bought a 2004 C5 from Lowflight. It had 2100 miles on it when I picked it up. He put the Blackwing on a few months ago. I am selling it as I plan on doing other mods to the car. It still like brand new. Has the adapter for the 01'-04' cars. I think it will still work on earlier cars too. Price is $185 shipped to you.