Loren,

Not really a valid response to your quest, but I figured I should post a few pics of my almost recently completed new WRX wagon sub/amp setup. My goal was to fit it in a full-sized spare and free up all of the back. The tray that used to sit in there with the useless mini-spare was pretty uselss.

Here's pic number one with the home-made covers removed. The sub is a small Solobaric SL7 *8-inch) and the amps are the smallest-of-the-line MTX 202 and 251. So far, sounds good.

Yes, you bet i hacked the styrofoam with my Leatherman to get the amps to fit, but it was worth it. Some minor wire dressing yet to go....