yea, i know it wont be all that great without an amp. but i just don't want to add anything on the car. i just want to replace whats there, with no addition to parts. it's a street car that sees track duty on weekends. plus i just like to keep my things simple. i'm just trying to get the most bass out of the rear 6.5" speakers as possible off the headunit. i know i'm asking for a lot, but thats why i'm asking for advice.
budget is about $150.
those tang bands are 8ohm. i'd like to stay 4ohm if possible. i'll have to see if they have one in that config.