No need to ask on the forum, simply look at ROAR's website.
2003 Nationals Guidelines (http://www.roarracing.com/rules/pdfs/2003guidelines.pdf
) available on this page: http://www.roarracing.com/rules/index.htm
"Only ROAR approved batteries, bodies, and motors may be used. Handout motors will be used in all stock electric classes. Handout tires will be used for all electric Off-Road events. Handout tires must be used for electric Touring Car classes unless foam tires have been selected by the organizer for use at this event. Handouts will be permanently marked with a number that identifies the car and/or driver, and is unique to the event. Vehicles, parts and accessories used in stock classes must be readily available through retail outlets at least 14 days prior to the event.
There are no restrictions of parts or accessories (except for batteries, bodies and motors) for open (modified) classes as long as these changes do not alter the vehicle to a point outside of the given vehicle specifications. For open electric touring cars there is a motor limit of a ten (10) turn minimum imposed."
In other words, if anybody ran an Assassin (for example; I hate to keep calling Corally out for this) in the Stock class then they should be (or have been) automatically disqualified.