Ebay has a selection of boxes made to fit mustang coupes from 94-04. Or you can build your own. It's a lot cheaper to do it yourself. My and a friend built him one for his 2001 v6. We used 3/4" MDF, screws and liquid nail. He's had it in for a few months now and never had any problems out of it. I think the measurements are no larger than 33" wide by 13" tall and however deep you want it. We went 16" i think. You have to remove the back seats to slide it in because it wont fit through the trunk. By the way, its a double 12 box. |