On a side note, this photo reminded me of one of the first projects I did when I bought the car. The gray foam is part of a heater seal kit you can get from most of the vendors for less than $10. The old foam was very brittle and most of it had crumbled away. Replacing it with this new foam made a HUGE difference in the amount of air that comes through the heater plenum and defroster ducts. Well worth the cost and effort, especially if you're already dropping the box for other reasons. Next –––>