For judging, as I understand it, you only have one real option, as it left the factory. However, that being said, I personally think that is a bunch of bunk. What should really count is the way the car was first delivered to the person who first bought it. Chevy (Norwook or LA) could have cared less about whether or not they installed the option of if a dealer later added it on. The only thing either the factory or the dealer cared about was selling cars. You've got a great example - the 8 track stereo. How many of those do you see? Very few. Car, to me, is more interesting with it in than with it removed.
Only caveat that I would mention at this point is something often discussed here. Car should be documented properly, clearly indicating factory vs. dealer options, especially at time of sale. A lot of people pay big $$$ for factory and for someone to try and say dealer intalled options were factory installed would not be ethical. You have clearly indicated factory vs. dealer for your car - so no problem there.
For me, I prefer how the dealer sold the car. But then my opinion and $1 will buy you a cup of coffee - and you won't win any judging contests.
