i have noo idea, was just something that popped in my head,not sure how well it'll work out there but its something different ive never seen but so will the compament idea be too

 

b_merr --- oh wait did u mean the second pic in the cargo??? i believe that is in a 4runner but the same concept applies with the blazer

 

yeah I meant the one in the back. I'd rather not try and cut into the liner in a way that it'll show because I'm not THAT sure of myself.
I've heard from a couple people that putting the sub under the paneling causes some rattling. I don't know how bad the rattling they're talking about would be though. I know putting it in the cargo like that would probably rattle less i just didn't know how much less.

 

yup

 

behind paneling, rattle fest. our trucks vibrate a lot and can never be quiet. i put about a grand of sound deadening in my truck and it was still loud. panels didn't vibrate as bad but still did because everything is held in with plastic clips and just loved to move. the side panel enclosure in the trunk is probably your best bet. it can be a combination of fiberglass and mdf to make it a little easier. if you aren't going for any bass other than rounding out a system with occasional loud listening, do a sealed box in the passenger corner and enjoy it. if you're going for a little more boom, ported along the whole passenger side. you'll have something like 26x28 of room in the cargo area if you're box sticks out a couple inches.

good luck man, keep asking questions if you have any.