I had a big single 12 setup for a few years, not sure how it relates to your SWX but it was a RE SX motor with upgraded soft parts and woven leads on 1k rms. I had it in a 2.5cu box ported to 30. The port was 3" wide and wrapped around 38.5" long. I ran it facing back and it was pretty ridiculous for a single 12". I mounted both amps on the back of the box though, so with the 28lb sub, 2 amps and the box itself the setup was around 150lbs. I couldnt unload it myself for trips to the track so i traded it for some paint work and downgraded to my current setup. As far as amp mounting I ran out of ideas there. I ended up just paying to have a nice clean panel done.
