How do I fit my box in my Mustang trunk? If you have ran into this problem you are not alone. While the Mustang does have a fairly large trunk the opening is not large enough to fit most boxes. We offer a custom dual 10" enclosure that will fit directly into the trunk and it also features a special cutout on the rear to tuck under the low clearing rear deck. this enclosure will fit all year Mustang coupe models and is compatible with most brand subwoofers.Our boxes are made from precision cuts of MDF. They are then liquid nailed, nailed and completely sealed. We then wrap them with high quality carpet that matches most vehicle interiors. All Boxes feature high grade spring loaded terminal cup(s) for the absolute best connection possible. All the custom series enclosures are made to fit precisely into your vehicle to the get the max performance from every extra inch of wasted space.We guarantee you will not only see a difference in the quality of the boxes we build, but you will hear the difference and that is what is it is truly all about.