It was a 2.0 Turbo with the track pack (or whatever they call the option package with the Brembos and Torsen) on the stock tires. I had previosuly driven a turbo Genesis on a test drive, and I hated the "throttle hang" between shifts. It was far less noticable during the one run that I did. Good power delivery and very predictable. I was impressed -- more than I thought I would be, to be truthful. I really liked the balance of the car -- it was easy to drive with the throttle.
Although it wouldn't be my first choice they certainly represent a great option for other enthusiasts.
I only got one run -- and my time was a 53.4xx or something similar. In contrast, in my Miata (reasonably prepped -- think CSS) on R888s I managed a 50.7xx as a best run.
Rob