That's fine and all. So if X brand shocks does the same, Do all the cars have to use X brand as well?

It's not about change, It's about making it more expensive for the racers. Exclusive rather than inclusive.

It's Sprint cars, You know, Run what ya brung? The Author of this thread build his own Sprinter. What's next, He have to run Maxim's?

I really don't know what your argument for the rule is?
Do you realize about half the cars at each show only make another show because they can do it 50 dollars here and there cheaper than the top teams. They know they don't have much realistic chance in winning. But they do what they can with what they have. And many times they surprise you with 18th to 3rd runs etc.