There are a number of circuits that recognize what you are trying to accomplish Ironman. Many of them have limits on body styles, chassis, or other criteria that limit their car counts.
I know of two circuits offer formats that will accept dragsters, the Southwest Superchargers and the Rocky Mountain Superchargers. In both cases there are no entry fees for members in their supercharged fields. Check out the websites.
Cheers,
Ed Arcuri
www.rockymountainsuperchargers.com