It was Andretti. In 2000, Mario Andretti signed the center console under the release button for the top. I have your car, 12307, in my registry. It was listed for sale on 03/30/02 with 8551 miles then again in 01/17/03 with 9880 miles at Fox Valley Motorcars in Chicago.

Do you mind emailing me the updated info on your car so I can bring it up to date in my registry. Thanks- beachbummed @yahoo.com