I have four JL Audio IB4 10" free air subs mounted on a baffle behind my rear seat. They are powered by a JL Audio 500/1 amp mounted in one of the trunk kit compartments. Check my sig for a link to pictures. The trunk retains all of it's original usable space. Unless someone gets down and looks up behind my spare they are totally incognito. Actually both my amps are stealth too, mounted inside the trunk kit's storage compartments. They sound good n tight. If you are at Impalafest in Texas, I will crank it up for you to hear. I will be improving all the pix on the link below in the near future. Good Luck on your decisions/install!