Just to let everyone know, I just received the official package for the convention. It will be in Indy and will include a drag day at the track. The NIA is for Full Size Chevys '58-'70. There will be invited Z-11s and Nostalgia 409s, as well as many big brute MK-IV big cars.
Their web site isn't updated yet with info but here it is anyway.
http://www.nationalimpala.com/
I plan on bringing a blue '62 out there and will be staying with a friend before and after the convention in a little town in the middle of IL called Philo (about 2 hours from Indy) so if anyone wants to pop by and visit let me know. Hopefully some of you big car guys might want to join the fun at Indy. Contact me for now if you want more specific info on the convention.
Verne