Mechanic removed felt Trunk shelf in 2008 Audi A4 Cab and did not return it when working on top pump. He left the plastic cover that it attaches to but I still need the trunk shelf which is designed to prevent owner from stacking luggage too high that it damages the top. Shelf fits upon 2 brackets. Audi dealer apparently gave the incorrect part number as 8H0 863491D 273 because it shows up as something else in parts catalog. Audi dealer indicates piece is unavailable currently and I would like to see if I can locate it in a salvage yard because of its $599 price tag. Online diagrams do not show the shelf. Does anyone know part number? I am in Nashville area.