i have done some measuring and there is not much space with the spare still in. maybe .50 cubic feet. depth is about 6 inches.not very much room for a cabinet of the proper size. and i have not heard back from eclipse .

james, where were you going to get the eclipse sub from? maybe they have the info that i need?

OZ VX ,could you get any info on the eclipse 10" 9102 sub? mounting depth ,cubic feet of enclosure?

kpaske , the pioneer sub needs .80 cubic feet of space . a no go with the spare tire in.
thanks shawn