The RCRC North Texas club is hosting this race next week at Texas Motor Speedway. This Nats is for the 'open' class of nitro cars; .15 4WD (10th scale) and .21 4WD (8th scale). Open practice starts on the 8th, controlled practice on the 9th, qualifiers on the 10th and 11th, and mains on the 12th.
For more info see their site at
http://www.rcrcnt.com/2003Nats.htm