Seeing as im a teenager the goal is defenitley loud!!! Budget for EVERYTHING is gonna be $2000 I have a 2003 ford focus se. with the factory blaupunkt system Few requirements I need to keep my back seat... Aux in is Absolute... Trunk limitations 20" high 40" wide 30" deep Sorry if this is in the wrong section i figured subs would be the best pick because that is, to me, the most important part of the system...