Yeah, I'll have to come up with something to cover it, shouldn't be too difficult.Looks really good. I'd try to cover that gap in the back with some cloth or something that would still allow ventilation. Other than that, very nice install!
Here's the final setup:
Pioneer P99RS:
Scanspeak Discovery 8's, 5 1/4's, and 4's.
Scanspeak Illuminator Tweeters:
3 Massive Audio NX4's and a Massive Audio N4:
2 Phoenix Gold Titanium 15's in a 3c/ft sealed enclosure:
Amp rack with fans and spare battery in back:
This video was taken with the N3 installed (1400wrms), I currently have the N4 (2000wrms) installed and it gets noticeably louder.