How to install Chevy Avalanche midgate sub enclousre

I guess I'll start off by saying that making this video was a last minute decision and I never do videos so sorry for if I wasn't being very detailed about some things and skipping a couple steps, I just figured it might be interesting and helpful to the Avalanche fan community and audio geeks =D

In the video I forgot to mention.
This box fits 2002-2013 Avalanche / Cadillac EXT
The internal volume is 1.50 cubic feet per side, I originally had my sub's in a 1.15 Cu/ft. box, and this made a big difference.

Edited:
The Original website/company that I bought this from is no longer around but there are some other options around if you look, and just for context I payed $300 for the box, that's not including shipping and handling which can be pricey but everyone's mileage may vary with that.