Hi, I am installing an Aguilar OBP2 in my SX shorty and I'm just wondering if anyone knows where to find a good 18v battery box for it. So far I've found one at Allparts and Stewmac.com that requires 1 1/4 inch of depth. The SX body is 1 1/2 inches deep. I'm not sure if that's enough depth. I noticed that the batteries do not lay flat in that box. Does anyone know of a box like that where the batteries lie flat and wouldn't require so much depth? Thanks....