GTO is heavy and scares me at CMP. It is a lot of weight to be throwing in to the kink at 105mph. And turn-one kills brakes.
PB was a 1:53 with the stock motor.
And this was the most fun I ever had there; while we were taking down the autox track at the end of the day. "Hey my M3 is a lease; want to take it out?"
www.youtube.com/watch?v=lKZjE5slxxQ