It hit me today, I wonder if you could put a set of subs under the rear seat? I think you might have to cut out and weld in new panels for the room, but could it be done? Maybe there isn't even enough room under there to do it, just thought it would be a cool hidden spot for some subs. Anyone with ideas on this?

 

Isnt that where the gas tank is? I dont think you fit them, even reshaping the pan.

 

Look nine threads down....

https://www.chevyhhr.net/forums/audio-video-17/sub-install-under-rear-seat-14720/

 

Bummer. Thought this would be a cool spot to try, and I missed that thread.