I did what I'm guessing a lot of MX-3 owners might have done--measured the area, cut out a piece of thin plywood that size, and glued thin black carpet on top. I also cut out 2 holes for 6x9 speakers, which was sort of a lazy way to "upgrade" & bypass the little stock speakers that are mounted back there in the plastic sides of the trunk.
I was just thinking about this since I noticed mine's gotten pretty beat up again--the sheet of wood (luan?) I used was probably too thin, and is starting to break. Thought it would be cool to hear about, or see pics, of what others around here did to "upgrade" the back trunk cover thingie.
![Idea :idea:](./images/smilies/icon_idea.gif)