Maybe you could even make up two, a left and a right with one speaker each. You'd get wider separation for some of the FX that way. It's basic black so it wouldn't be hard to make it look right.  A couple of sturdy boxes made of 3/4" plywood with some black Naugahyde and grille cloth to cover and you're done. If you don't have the where with all yourself, surely you could find someone that would find it an easy job that would be willing to help you out. 

Better keep your head down down there. From what I understand they are shooting it up like back in the old west while looking for that guy and are shooting anything or anyone that moves.