I just purchased a grand national a few months ago. It was stock with 14,000 miles. I have since put a Tin man kit on it, test pipe, 160 thermostat, scan master, vdo boost gauge and Turbotweak chip is on its way in the mail. The one thing that I should have done first I have procrastinated on since there seems to be so much discussion on it. I'm buying a pump and Hotwire kit tomorrow from either Turbotweak , gbodyparts or Kdk performance out of Orlando(his is Reds XP). Any recommendations ? There seems to be a slight difference in price between the 3 but I'm mainly concerned with customer service,warranty etc.