At first I was set on the Alpine SWS 10d4 in my 09 Explorer. Now I'm pretty set on one 12" and debating if I should go with a Kicker CompR from Best Buy or Apline Type S 12". I really like that the Kicker already comes with a box.
Here is the link to Kicker:
Kicker CompR 12" Dual-Voice-Coil 2-Ohm Loaded Subwoofer Enclosure Black 40VCWR122 - Best Buy
Here is the link to Kicker:
Kicker CompR 12" Dual-Voice-Coil 2-Ohm Loaded Subwoofer Enclosure Black 40VCWR122 - Best Buy