Claude, the whole car show judging thing depends on what type of classification you are judging. Cars that are entered into a Factory Restoration Class are, (supposedly), judged as much on correctness as they are quality of the build. In that classification, at the upper echelon, seemingly trivial things like a grommet being wrong does make a difference. The judges are supposed to know this.
Of course, that isn't always the case. There have been cars offered up on this site for evaluation that have won very prestigous awards in the Correct Restoration Class, only to be picked apart by the crew here on Chevelle Tech.
And rightly so. If you are going to present a car as being correct, then that is where the value is.
Custom Restorations are an entirly different animal. They are judged on the quality of the build, and the way the car is presented at a show. Attention to detail is paramont. Many times, the judges first impression when he walks up to the car is as important as anything.
This particular Forum concentrates a lot on value as dictated by a cars original pedigree, and how much of that original pedigree is still there. That is where the "investment" value lies. The car will always have a certain market value because of this. A matching numbers L-78 will always be that.
Custom Cars, like mine and thousands of others out there, are nothing but attractive toys that top out at a certain value regardless of what you have done. These are not investments. That is, unless you consider spending 5 times what you could ever sell the car for as an "investment".
I wouldn't want to hire you as a judge at a car show, because it's very likely that none of the cars entered would be nice enough for you! 
