Get a set of the fiberglass lower door panels from the member on the site here that sells them.. dynamat them, put a good pair of 6.5" components, and if you MUST have rear-fill, just put some full-range 4x10's in the rear and add a powered bazooka 10" tube.
Q-forms kick panels will give you a better image, but I hear some people have to relocate the ECM.