So.... that's my car, an 84 WH1 and that's my note. I drove it to the show and home in the rain only so people could see in person the GM Restoration door skins from Highway Stars as installed on an otherwise straight car. Seeing them not installed can give you some idea of quality such as straightness, lack of sharp edges, ecoating etc, but all doesn't mean squat until they are installed. I got nothing but amazing comments from the crowd and challenge any concour level judge to be able to distinguish them from factory. All the style lines and curves are dead on. The dimension I was refering to is the front to back taken at several height points on 10 factory non crashed cars from the 84 to 87 range. And we found up to 1/8" in this factory dimension data. This is in part as these were full frame cars built in an earlier stage of assembly line robotics, with less tight tolerances than today. The "new" Regal will have a much tighter marble roll down the body seams as it's unit body / modern robitics built. Nice, but not the body on frame RWD car we like for all the reasons we like them. So a dimension had to be decided upon IE where the panel 90 deg edge fold starts so that once crimped by the body shop, the resulting dimension hits the mean dimension of all cars sampled. So that's what was done. These have that edge just like the GM service replacement skin would have had when available. The body shop that did the implementation at first wanted to turn us away. They don't deal with repop sheet metal. Been there, been burned with junk metal and an over-hours project resulting in unhappy techs and customers. This is a high end resto shop, not a crash and dent shop. In the end they could not distinguish from a GM original service replacement. That CAPA stuff is for crash parts to set a Minimum acceptable level so that people are not injured or killed by low standard parts should they be in a post repair crash. Yes when you go to Rockauto for a simple part for your Jeep there are like 12 different brake rotors to choose from. There is such a range there has to be some regulation to keep a minimum acceptable. The GM Restoration parts system may not be perfect, and there are probably more bad Chevy parts out there due to shear volume, but to generalise about 2 particular parts, L & R door skins, that you have not seen, or inspected as loose and installed is completey unfair. Ask Dennis Kirban who "wrote the books" on Turbo Regals how it looked in person. In fact as he always likes to take lots of pictures at events and he spent some time looking it over, maybe he even took that picture. Who knows. The purpose of these skins is to allow a guy or gal with an otherwise saveable car to get the door dent and rot problem solved and keep the car in the fold to enjoy.