Camaro sound deadener
 

My question is ...and I assume this work was done on the Fisher Body side ...and that is why it is not in the assembly manual ??
When is the start/stop point in 1967 for a Camaro with deluxe interior to have the sound deadener in the trunk that goes under the spare and across the top . I have heard 2 sides of this story .

Photo
 

Here is a photo of the area and approximate dimensions