i have a JL 500/1 amp that I took out of my truck before getting my 2010 KR. the KR came with the 8" sub in the back. I really don't watn the stealth box that goes under hte larger portion of seat as I pack things often in the back. Is there a 10" sub that will fit under the little seat where the 8" is? And can that amp be placed behind the seat for that sub?