Hey John,
Watkins should be good for about 140 on the long straight. Braking might get interesting. Don't know if I have the marbles to try such a stunt, but you never know. I haven't run the Cobra there yet, but took a pass in a 94 Vette at 138 mph. With no roof I believe it would be far to turbulant, but with the right set of tires and a good alignment I think an A&C would do well. I've seen 100 mph (For about five seconds) in the Cobra already, and it was not that bad. The car was actually very stable. I plan on getting over to the Glen with the Cobra next year. I have put a lot of money into safety equipment so I hope it will be allowed to run. I'll let you know.
--Mike