Norbs, I have been using a Holley HP system on my LS equipped TR for about a year and a half now. Car is normally aspirated heads/cam on E85. I opted for the LCD touchscreen as well...I haven't had a bit of trouble with the system other than some initial communication issues due to drivers...I like the system overall. Very easy to use. Late last year, I sent Holley a coil pack, module, cam sensor, and crank sensor through a friend of mine who is a Holley dealer. At the time, they were planning to put a plug and play system together for the Turbo Buicks. Not sure where they are on it.