I guess I always assumed those building or owning a class car were NHRA or IHRA members and had access to a rulebook

. My bad but that sure explains a lot!
Here is the link and as Tom pointed out, you will need to be a member. You can then download your own copy which is free with membership.
http://www.nhra.com/members/benefits.aspx
So to those out there contemplating owning or driving a class car, I strongly suggest becoming a member, knowing the rulebook, subscribing to Nitro Joes Stats and going to your local class race and talking to the participants.
Merry Christmas to all!