1969 Camaro Factory Undercoating - Norwood Car

[CamaroNOS]

Gentlemen, I am trying to decide whether or not to apply the "factory" undercoating up in the rear wheelwells of my Norwood built 1969 Camaro. The car has gone through a complete rotisserie restoration and should/hopefully hold it's own when being judged. Here's the question, do I apply it or not? How critical is it when being judged? What product is correct?
Can someone pls forward me a bunch of detailed pictures of where and how extensive the undercoating should be. Is it true that the trunk drop off's were partially sprayed as well and if so, are there some pictures out there? It would be great to also get some pictures of a undisturbed/original factory wheelwell as an example as well.

Thanking you all in advance.