2nd from top
Probably just plain plywood.What does the other side look like?
Second from top 'might' be the grommet for the emergency brake cable as it exits the drivers footwell.
My thoughts as well...but on my 70Bee, a similar one is under the package tray and is for a steel gas tank vent tubeSecond from top 'might' be the grommet for the emergency brake cable as it exits the drivers footwell.