Hey guys, first post. I've been having a little problem troubling me with my new '98 GT. She seems to be running a little hard or something. She has a slight vibration while idling in neutral. She also shakes a bit when I shut her off. Any ideas what could be wrong? Also... I know for sure she has been ran pretty hard by her past owner... Probably has something to do with it. Hopefully not, and it's something I can repair. Lol. Thanks guys.