Sorry for the delay!
Yes, the head unit is sold. OP updated.
Polks are 6.5 inch for the components, 6x9 for the MMC690s. George, I have a guy who was interested before you posted, he has first shot and I'll let you know.
Clay, I *think* I have the original boxes in the basement, which would have the cover, but they're weird, like rims, they only have bars that go across. I'll find out what I have if you want.
http://www2.crutchfield.com.edgesuite.net/pix.crutchfield.com/ImageHandler/fixedscale/400/300/products/2003/107/x107mmc690.jpeg