Mike, just a suggestion, and I'm not trying to "beat-up" on anyone here, but this seems like a question best asked AND answered in its own thread post. Duane and Cooter did an awesome job trying to promote the NHRA Division #2 1/8-mile program that Rich and his crew put together for us, but somehow this thread got WAY OFF topic. Maybe we should give things a rest - at least until the next event!
If you're interested in what the differences are between what a IHRA Pure Stock "was" like, and what modifications would be necessary to make it competitive as a "legal" NHRA Stocker, I'm sure a post in the Tech Section would garner a whole lot of great information! You might also do a thread search for any archived posts.