Fits 1994-2004 Ford Mustang Coupe Will not fit Convertible Hole cutout for 8" Sub: 7 1/8" Hole cutout for 10" Sub: 9 1/8" Hole cutout for 12" Sub: 11 1/8" Subwoofer Mounting Depth: 8.75" Dual Subwoofers Airspace: 0.80 cubic ft. Per Sub/Chamber Single Subwoofer Airspace: 0.80 cubic ft. Made with 0.75" MDF Speaker Wire Terminals: 1 Per Subwoofer Box Type: Sealed Box Box Finish - Carpet Installed Pictures Shown in Charcoal Grey Subwoofers & Amps Not Included Hole Cutouts adjustable per request Dual Subwoofers airspace can be reduced if requested Single Subwoofers airspace can be changed from .625-1.60 if requested *****Mustangs equiped with the Mach System will need to permanently remove the amp rack thats under the rear dash in order for this box to fit. Amp Mounting.......With this design there is room(approx. 9"x34") to mount your amps on the back of the box or the rear seat. Installation: The box must be set in the trunk UPSIDE DOWN then ROTATED/FLIPPED FORWARD....very easy