I just recently bought a 2004 GT1, I love it, I have already upgraded to a 5 button DIC i pulled from a car at the local scrap yard. The donor car also has heated leather seats which I plan to pull soon since I know all the wiring is the same on this generation. I do have a question though, The donor car has a digital dual climate control where as the one in my GT1 is the basic analog...is all of the necessary components in my GT1 installed already to be able to use the one out of the donor and have dual climate in my GT1 if I use the one out of the donor car?