One more detail missed. In 2004 there was 4088 SS Supercharged Indianapolis Motor Speedway Limited Edition and that is a mouthful...

Here is an example of one listed on GTcarlot: http://gtcarlot.com/colors/car/13087889.html
Wikipedia lists it: https://en.wikipedia.org/wiki/Chevrolet_Impala#Eighth_generation_(2000–2005)

@Gamer this edition seems to follow the SS style too.

Edit: adding this newly found document from GM: https://media.chevrolet.com/content/dam/Media/documents/CA/Archives/EN/Vehicles/- chevrolet/2005Impala.html