Pioneer 10" subwoofer/enclosure package. Front part of trunk is covered with 3/4" plywood cut-to-fit and silicone glued in place. Amp is attached ... Show moreto a carpet covered plywood piece attached to floor plywood with large "L" brackets. Remander of spare tire well is covered with cut-to-fit heavy duty hardboard, painted white. Spare tire is still removeable. I know this isn't show quality but it's nice and neat and sounds great. Show Less