dj has it right. There are no 'required nos parts' only requirements for fine point judging. Besides the 6 he wrote, there are original type electrical system (lamps, generator, starter and battery located under the floor), original type two blade fan ( a long way from the original propeller style, two blade metal fan I proposed at a MAFCA JSC)j, original style top and upholstery material for year and model of vehicle,original type steel sheet metal (no fiberglass), original type exterior paint color and stripe pattern for the vehicle, original type tires-correct size for year of vehicle, original type metal valve stems and covers, original type shock absorbers, arms and tubular links. Not difficult to get into fine point at all.
I'd love to have and i'm still looking for a 28 battery, useable fan belt [i have a 31 belt that i will use if i have to,if i can get it soft enough], 8 1/2inch door check strap, better wiring and a few other things but if i never find them that's ok too. I'm building this for me, not for the points. I'll have it judged just to see how I did... or not...haven't decided yet.
I don't want the standards changed to allow full points for repop anything. That wouldn't be fair to those who sought and found the original parts. Just because I can't find them, doesn't mean I should get points for repop.
stand·ard
[stan-derd]

Show IPA
noun 1. something considered by an
authority or by
general consent as
a basis of
comparison; an
approved model.
aptly named 'Judging standards'. The vehicle will be judged to the standard.