Originally all GM assembly plants (except the Corvette plants) consisted of separate Fisher assembly plants and GM assembly plants located for the most part on the same property and sometimes under the same roof. Fisher was originally a completely separate company. Some assembly plants were even in different locations and the Fisher bodies were shipped to the GM plant for completion. Fisher assembled the rear half of the body and GM did everything else. This configuration was not very efficient, because now you have Fisher paint shops, Trim shops, Welding shops, and you also have GM equivalents. As time went on GM absorbed Fisher into the GM family and then went about incorporating the tasks Fisher perform into common shops. This common assembly line plant is referred to as a GMAD plant. Camaros were built at both Norwood Ohio and Los Angeles CA. Norwood was one of the last assembly plants that had separate facilities, while LA had a single assembly line that not only built Camaros, but also Chevrolets, Impalas, firebirds etc. Each of these cars built at LA came down a single assembly line in the same order they started with, they had no provisions to rebalance the line like Norwood did so whatever assembly constraints both GM and Fisher had to contend with had to be handled differently, than at Norwood, which could slightly modify the arrangement of cars bodies to suit GMs needs after Fisher finished with them. Each plant handled VINs differenly and put them on the body in different parts of the plant. Norwoods is described in the assemlbly process report. LA did it slightly differently.