i used the same set up as airedout and mines about 45 inches total along the bottom so top section is about... 37 " thats from the shifter angle spot to the back. just a random guess but i can go out and git you some measurements here in a bit.
how much work was it to move the stereo from the stock location to where you have it? is there any thing behind that plastic i would have to watch out for?
looks good, I wish that I had a better pic of the one that my father in-law and I built. I will see of I can snap some more pics when I see the guy that bought it.