I strongly recommend if you bring a survivor car to a car show, watch it like a hawk. I had a guy with a $200k plus 69 camaro get some points off in judging at chevy vette fest, and they told him what an original washer bottle lid would be like (some ridge underneath the finger tab) to go look at my survivor camaro that was the closest car located by his. So I see him underneath the hood of my car, did not even ask me, with the washer bottle plastic lid tab 'bent back' looking for the mystery ridge, and now the tab is bent back and broken. Yes, I lost it when I rushed over to my car to see what he was doing, he told me it must have already been broken and did not even offer to find me another one as an appology (which would have quickly calmed me down). I took my car home with the task of now having to find a survivor washer bottle lid because someone could not respect a survivor car the right way, by asking first. I have no idea how much its going to cost, or where to find one, or where to look.
So beware of the downsides when you go to a survivor show, it may end up costing you more time, money, and aggrevation than admission. Defintely cable lock the hood at shows when you leave the car there overnight.