I have a 2008 SR5 without JBL and have been upgrading the entire sound system one piece at a time. Everything sounds great now, but system needs more base, so I was thinking about installing two 8 inch or two 10 inch subs in the aft under floor storage area just behind the floor jack. I have already ran a fused 6 gauge power cable from battery all the way to rear of my Sequoia. Do you guys know if this area will work for subs or do you think everything will vibrate like crazy? Its about 6 inches deep, 11 inches wide and about 4 feet in length.