Originally Posted By Powerflow
It could also have been a dealer-installed aftersale item. Probably helped with reducing noise in the trunk.


It was very thick in some places, almost 1/4 inch thick

69.5 A12 Bee, first purchased in 1976, car 169 on registry 69 Coronet R/T 440/4 spd 69 Coronet 500 Conv H code 383 4bbl/auto 37 Plymouth PU Find your spot on earth and ride it.