In normal racing circles, SCCA and such, ANY DOT approved tire is considered a street tire and is thus legal for competition. "Grooved" slicks, are typically DOT approved, or they wouldn't have the groove's!
It's logical and fair to simply say, you both gotta run DOT approved tires. Blitz, you GOT to run at least DOT slicks or you got no chance.
Sure would be nice if some of you Vegas guys could hook up with Blitz while his car is down and go do some test runs and driver training. Then repeat when he get's his car running!
So, Tommy, you might nod off? Now THATS funny!