Posted a quick reply via my phone earlier. I installed the Decked system about 2 or 3 weeks ago. Really enjoying it so far. Stores a ton of stuff and the accessories (tool box, storage box, etc.) are top quality - heavy, well built, sealed and unique in terms of design. Took me and a helper maybe 2 hours to get it all in - but we took our time and that included removing a bed cover and the swing out tool boxes. The new update is a big improvement with the drawers coming much further out and the 4 storage containers being a better design then the previous "ammo box". Drawers are super smooth to pull out and close and stay open - even with a heavy load.
I ordered a few extra dividers and other accessories. I don't think the extra dividers are necessary unless you just really need to keep things separated. The locks are nice and a good add. With the HD layout, you can reach down and open the drawer slightly. Enough to maybe grab something out of the first storage area (the pull out containers that fit around the handle cutout - the yellow handled stripping pliers, etc. in the pic above). If you have a bed cover they wouldn't be needed technically, although I'm using one side for transport of items that I'd want to lock regardless.
If I ordered anything it would be more of the drop in pieces for the 4 storage openings but honestly what they send as part of the kit is a great starting point.
I've been through pressure car washes and direct sprayed the entire system including right at the drawer face and I've seen zero moisture intrusion. They updated that as well and it seems to be working.
There are a number of cheap basic storage containers/totes from Wal-mart or other box store that will fit perfectly as well. Good for fluids and such. I haven't gotten there but I plan to have a number of items staged in these boxes so I can do a quick swap. For example tailgating - pull out my tools, throw in the totes and be on my way.
As I said before, completely satisfied. Well built American made product