That is exactly what I want to do. I found where you posted pics on your website. I have 2 ten's so I probably wouldn't be able to do your exact dimensions but yours looks great. Did you do it yourself? Was the Fiberglass part hard?
Ok. I want get back my trunk space and all these pics look about how much trunk I have now.
The pics that I saw a while back, was the amp was suspended right under the rear deck and the subs were in a custom fiberglass looking like box, on each side of the trunk left/right right by the wheel wells.
I will post new pics of my set-up tonight. I had to take it out this last weekend to partially rebuild it for the new subs, so I finally I have pics of what my enclosures look like behind the cosmetic covers/amp racks.