I think an enclosed 8" or 10" in the rear deck with a plexi window on the side of a carpeted enclosure(to be viewed in the trunk ) would be sick. Use a neon or LEDs to illuminate the inside of the box...
'01 Escape XLT V6 on S100
CDT Audio/Ascendant Audio/Rockford/JBL/Knukonceptz setup
'00 SE Sport ATX