[Rory McNeil]

Well, technically,unless you only at one track, and use a track issued number, you are supposed to have a current NHRA permanent driver number for each class that you may run the car in. Myself, I have had the same number since the mid 70`s, and I have that number for Stock, Super Stock (ya never know!), and ET brackets, and used to have it for Super Street years ago. When you apply for, or renew your number every year or 2, its only an extra $5. or $10 dollars extra for each additional catagory. That said, there is the potential that a certain number could be issued to different people in different classes, ie; Racer A holds number 1234 in ET Brackets, Racer B has 1234 for Stock, and Racer C holds #1234 for S/S. In that case , Racer A is the legitamite user of that number at a bracket race, if Racers B&C are there to test in brackets, they have to change thier number.
Now, on a top ten National or Divisional number, I would think that in addition to holding the coveted #1 or other high ranked number, that the racer would keep his previous 3 or 4 digit driver number current, at least I would.