I've got an 8" shallow sub that I'm putting into my 04. It's just too freaking cold in my shop to build a box (not to mention that I have far too many other projects).

I've been looking at buying a factory DSP sub, ripping out the speakers and putting in my sub. The boxes for the 99-03 cars look smaller, but they're about half the cost of the 04-06 ones... anyone know if the older boxes will fit the newer X's?

Thanks

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'04 E53 X5 4.4i
'05 Mazdaspeed MX-5
'00 Saab 9-3 SE Cabrio