Seeking some opinions on ICE solutions for the E30.Do not intend to butcher the door panels, so the front speakers will need to stay in the stock kick panel position. These take what, 5.5" mid bass units?What about the sub? ok the use a sealed box in the boot?I suppose the ideal solution would be to fabricate an enclosure behind the ski hatch with the sub firing into the car?What have you pple done?Pls advise.