I am planning on a build and would like some added input if possible. I have a 94 Integra and I bought some USD D-200 wave guides to use under my front dash along with 6.5 midbass for the doors.They also came with the crossovers.Not a whole lota room and I have leather door panels so I dont really want to modify if I dont have to. My question is I plan on using 2 12's. Will the guides and drivers be enough to keep up with 2 12's. and if not what other speakers you guys think I should add? and where? 1 other question I know USD is good stuff how are their subs anyone know?