took better measurements
the center area gives maximum of .27 sq ft, external, with downfiring woofer.
the left or right seat area gives about .33 sq ft, external, with angled front firig woofer.
i want the woofer in center, but since base freq are omni directional, i think placement shouldnt be a concern. one can fix the amp, upside down in the center with some heat/fire proofing.
lets see if i go fwd with this project, or will it stay on drawings only.
some pics below.