I guess I'll get the bad news done first. Unknown engine issue at this time.
Have yet to get into it. Suspect some thing broken in the top end. Heard nothing in the way of breakage, pulled out of a corner hard on the gas and noticed a different sound, the exhaust had a deeper tone. Did a cool down lap pulled into the pit and stopped. At idling speed a random 'bad noise' was heard. A single random slap/crack and turned the car off. Did complete cool down then a start up. Idled for a couple minutes sounded totally normal then slap/crack. Turned it off called for a trailer. Had it hauled to my mechanic as opposed to home, wish I did not do that now as he was leaving for the weekend, and I didn't have access to it to get into it. auuugh
So that was the bad, hoping for the best and I don't have to get deep into the motor!!!
The good, a two mile road course that was super fun and FueL drove hard. Once I started to learn the line (first time at this track) I really started flying, it is a beast! Fast and hard into, through and out of corners, WOT on the straights was

!!!
The brakes, damn impressive, worked them hard and zero brake fade.
My first WOT in the fasted part of the track followed by very hard braking into a corner the instructor (passenger seat) just said, 'wow I had no idea.'
He is used to Euro cars and Vettes, it was his first PT ride.
I few laps later I was unfortunately done. Hitched a ride with a really experienced driver with thousands of laps at this track in a Porsche GT3, that was impressive I learned a lot.
So I'll keep you posted. I'm really trying not to get to depressed about it or feel guilty about driving hard. I've broken a lot of toys over the years... just not my favorite one!