Above, what DVW says is pretty darn accurate. Victory rules haven't, and most probably won't change either, for some of the same reasons.

Not many people have heard of the Econo dragster class in NHRA. Here is a class that just after a couple of years of rule changes, fell apart.

Junior dragsters are another neat example. What started out as an "affordable" package to run, engines are now 20 plus times the cost of the original rules.

Keep changing rules and things don't necessarily get better.

BTW, I know of no rules that were changed to fit a car. Cars were changed to fit the rules.