Quote: I was told ALL louvers were installed at the dealer once the car arrived there.
If that's true then there probably were instructions included with the original louvers, but the dealerships discarded them. Also, the dealerships in general weren't very good at following the instructions and seem to have often discarded them before starting the project. This results in measurement variations from car to car when comparing originals. I suggest this because that is the situation with challenger front spoilers. Luckily someone found a copy of the cuda front spoiler instructions, but many dealer installed instructions are missing in action.
