X45 Sub install - JL 12W7

Awhile back I had posted asking if anyone had done installs for an X45. My buddy picked up an '07 and was looking for ideas. Here is what he came up with.
JL 12W7 in a 1.75 cu ft vented enclosure
Alpine PDX 1000 - powering the subs
Alpine PDX 4150 - cabin (4 JL 7.7's)
Alpine PDX 4150 - 2 chn for Bow (2 JL 7.7's)
JL (?) - powering tower speakers

First he had to relocate the electronics so he built a shelf and moved everything.