i understand that but two 6" ports will consume more airspace then one 8" port and the larger port has more sq in over all.will having the subs as far to the left and right hurt anything. the edge of the sub surround will line up with the edge of the box. Or i can( and like the idea of) putting one of the subs in the bottom left corner of the enclosure and the other sub at the top right

here is a rough idea of what i meant. Ofcourse the subs and port would be closer then this but it gives you an idea, wouldnt i gain about 3/4" if i did this?