who and where did you talk to at gm do you have number name or department. I just picked one up, I'd like to know where I could get a replacement certificate for it. I've got the title for it all the badging for it including floor mats just need the certificate and what number it wasI also have an 04 Imp SS (indy limited edition), and soon after I purchased it (Oct of 05) I wrote G.M. and asked about production numbers on this particular edition. They wrote back and said there were 4088 produced and I have the 2556th unit. I live in California and I had it shipped by truck from Chicago; (sight unseen) Carmax found it for me and promised it was a pristine car. They were right. It had 15k miles on it, never wrecked, etc. I recently upgraded to 18" black, 5-spoke wheels with P245/45ZR18 Toyos. Also, I have added darker tint on all windows, including windshield. I installed a windscreen in front of the sunroof. It sure cut down the wind noise! I am planning on a [email protected] cold air intake with filter next. It supposed to increase H.P. by almost 14. I sometimes worry about the transmission, as it makes a high whine when it's cold. I have heard of problems with the standard Impalas, but I think the supercharged units have a stronger tranny. I have to research this....I've had my SS for 3 years and it never gets boring. I love it!