I traded in my 02 GT at 90K miles. the only things that were replaced was the Cat Converter at 35K miles?, the LIM at around 70K miles? and a thermostat at around 60K miles. otherwise everything under the hood was all original. I did have other things replaced over time like a multifuction switch, and a few other electrical or regular maintanence parts but otherwise the car was still running decent... I would have kept it if it wasn't for the massive amount of electrical problem i started to have and all the accidents I kept getting into which probably a cause to most of the electrical problems.