well every since i inherited my grandfathers mariner ive been planning my install. so far ive only installed my subwoofer and amp. Ive got an American Bass PH4000MD and a SSA Xcon 18" D1. the box has 6.7 cubic feet plus another 1.9 cubic feet for port, it was tuned to 34hz i believe when i designed it. I used a simple LOC to run my amps RCA inputs. worked pretty well but as soon as i get my income tax im getting a Pioneer double din and 4 channel 100watt rms @ 4 ohm amp. then replacing all the door speakers and installing components up from with a nice mid range drive in the back doors. right now with the stock mids / highs i cant hear anything over this xcon. shes a beast gains not even half way and it slaps. anyway heres photos, im open to suggestions!!