I have 3 ideas that I'm bouncing around. The first being going to a 10" and go from there, not too fond since I already have the 12". Option 2 would be to build the box out to the edge of the cargo floor, this would give more volume, keep my 12 at the sacrifice of some space that I probably never use anyway. My third, and current, option is to leave it in the box I have; don't like this option as it takes up a lot of space, have to take it out while working on amps underneath but it would offer the best sound. So, I guess I'm still in the same boat. Hopefully things will go quicker now with the discovery about the line-out from the DSP amp.