Hello all, First post here. I'm looking to add some low end extension to my non-Bose factory radio in a 2010 Suburban LS 9-seater. Front bench seat, middle bench seat -- no center console. I already replaced the blown-out rear door speakers with Kickers (CSC line). I don't need massive bass. I simply want some low end extension so I can hear, for example, the double bass playing when I listen to jazz. I listen to rock, jazz, and classical. Here's the limitation. We have a big family and when we go on road trips, every seat is full and the back is full too. Not much room for a subwoofer enclosure. Could I get some adequate low end extension from an 8" or 10" underseat powered subwoofer, like the ones from Rockville? They're typically about 3" tall. Examples: amazon.com/Rockville-SS8P-Under-Seat-Powered-Subwoofer/dp/B079PRCP9W amazon.com/Rockville-RW10CA-Profile-Powered-Subwoofer/dp/B019Z3R582 Location: Is there room under the second row bench seat for one of these? I can't find measurements anywhere and its a bit tricky to map out the space myself. It looks like the vents on the floor under the front driver and passenger seat would get in the way of a subwoofer there (and heat it up too in the winter). Is there a way to mount it there? Any other suggestions on location? Thanks!