Port Distance From Side and Bottom

Ok, another question, sorry for all the questions but this is new to me and i cant find these answers... When i account for the size of the enclosure, which i want to be 2.2 feet cubed, is that 2.2 the green area in this picture?

displacement1.jpg


Or this picture?

displacement2.jpg


Ohh, and how far from the sides do i need the subwoofer? And can i make this port upfiring with the sub in front? Because with the dimensions of my car, i cant fit both the port and the sub on the front panel.

 
Oh and i dont think it matters how close ur sub is to a wall as long as there is space for the vent on the back.

 
Bump. If i use rice, won't the rice get in places it shouldnt be or will it be fine if i just blow it out with an air compressor. And also, can i put a port top firing and have the sub front firing?

 
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