hey, i was thinking of getting a 8" or 10" JBL sub... and i wanted to ask, if i mount it on the rear panel... you know, the one behind the rear seats that comes off... would i get good bases ? or its better to get a box for it ? .... i dont want to make the whole car shake... i just want to add some bass... so would the trunk act somewhat like a box ? or would that make the sub useless ? ... THANK YOU !!