WOW, this got a lot of posts! I am a member of NSRA. 40,000+. As far as I know, the only requirement is under 1949! I am car crazy and love all cars.
I am a Chevy guy with a Ford and once toyed with building Cobra. There is room in this hobby for everyone : From people who scratch build every piece all the way up to people who buy a can't change there own oil. I have been to very NSRA Natioans since the 80's. Every one has their own opinions. Except for saftey, shouldn't we stop short of saying someone else's efforts do not fit in with ours?