I don't know what the Camaro judging standard is, but the published NCRS Corvette judging standard specifically excludes any dealer-installed (or removed) items:
"Cars are to be judged to the standard of vehicle appearance, and as equipped, at the time and point of final assembly by the Chevrolet Motor Division of General Motors Corporation. Presentation for judging is to be in the condition normally associated with that of a Corvette which has undergone the then-current standard Chevrolet Dealer New Car Preparation for delivery to the purchaser, exclusive of any dealer- or purchaser-inspired additions, deletions, or changes."
For instance, if a Corvette has a dealer-installed luggage rack, there is no deduction for the presence of the rack, but there IS a deduction for the alteration to the body to install it (the holes drilled in the body panel).