Manny, the NHRA rules are strictly enforced at Firebird.
The NHRA Rule Book is not published on-line. You have to buy it because it is changed year to year.
http://store.nhra.com/product.asp?3=54
Here is a list of your most pertinent parts. I think Speedworld follows this list:
Except on their Wed street tire night.
http://www.okthunder.com/tech_guidelines.htm
AZ Bob