EXCELLENT EXCELLENT EXCELLENT BRONCO ADDITION THAT IS ALMOST PERFECT!
First I have to say this is the single best addition I have made to my 24 OB SAS Bronco in the 18 months I have had it, and I have tried just about every mod or addition there is. I should have put this in the day I bought the Bronco, and I will keep this whenever I upgrade to a newer Bronco.
This comes fully assembled, so you just have to focus on getting this into your car. There are two stabilizing bars you have to remove in order for it to fit, but those are just leftovers and you discard them, and they take all of 30 seconds to unscrew. The bottom rails will use the bolts - I believe they are Torx 40 - that are already in your Bronco, so you do not have to get special hardware for it. There are eight bolts total, two in each of the four corners. It will be a two-person job to get this in though. The unit is HEAVY and solid, so to start one person has to hold this elevated while the other person gets the bolts in and tight. And when you remove your old trunk liner, you will find a gross design flaw Ford made - they line your trunk liner with carpeting, so if you have any dust or liquid spilled over your ownership time, you may find it moldy and disgusting, so before you install this, you want to wipe down and dry the exposed metal trunk bed as it will be your last chance to access that easily and clean things up.
This has four levers to release the two-stage shelving apparatus. The outer levers have to be held down for the whole platform assembly to slide out, and the there are a pair of inner levers that have to be held down for the compartment sub-floor to slide out. Both catch at certain intervals so you can lock them in partial pull-out formations.
This is EXTREMELY solid. It comes with a custom molded cover that fits the lans and gloves of the textured/patterned top of the mechanism. That cover is a little thin, but the lans and grooves hold it in place, and there is some velcro strips you can add to the perimeter as well to hold it in place. I like it so much that I have not bothered to see if a thicker trunk liner will fit on tip of it.
You can see from the pictures the space it takes - it elevates your trunk about 5 inches and makes it much more level to the non-flat-folding second row seats. Also, I noticed the trunk noise is lower with this in place as there are three layers of metal to be a muffler from the sound Bronco design, so that makes it even better. The weight-bearing sticker on it says it can handle 260 pounds. It levels things off enough so if you need to lay down for a nap while in the Badlands, you can. (Yeah, I did that.)

The compartments drawer is divided into three parts - two 8 inches wide and one 16 inches wide. The dividers are about 2.2 inches tall but the outer compartments can handle items that are about 2.8 inches tall. The middle compartment, the 16" widest compartment, is limited to about 2.4 inches tall, so take that into consideration. That limit comes from the hard plastic pull handle you can see in the pictures... that handle is VERY solid plastic and flares a bit to the sides and downward, so it takes a little of the vertical capability away from that center drawer compartment. I have seen some pictures online where people have removed that hard handle entirely - it is held on by two very solid bolts, and added a rope pull handle that does not extend beyond the edge of the platform.
You can see the pictures showing the relative size - grocery bags and the like, and I have also installed a shelf in the trunk, and I think the shelf and this drawer assembly are perfect compliments to each other, proving a LOT of security and utility.
The combination costs a little money, but it is more than worth it. You will not regret it.
I gave this five stars because it is so great. It is not totally perfect though, but just a few small things that people should know... while these are criticisms, they are in no way deal breakers for getting this.
First, I think a little rubber padding is needed below the whole drawer assembly, just for noise reduction and debris gathering. I am told that is in development.
Second, the handle I mentioned extends a bit too far so it is almost completely flush with the closed tailgate. That lack of space means that a lot of tailgate work/picnic tables will not fit there. I had a Mabett tailgate table mounted and had to remove it as it would not close. I do not know of a manufacturer that would fit, and I used the work table just twice in 18 months, so I removed it and put in a flat Molle panel and everything fits and closes perfectly fine. (I also found that much rattling came from that fold down workbench so I was glad to see it go.)

Third, the drawers come with a black toolbox liner. I think that liner should be a bright color so you can find things in the drawer easier. This is a really minor point, but I ordered some RED toolbox liners and will cut and insert them next week. I may add a little tearable 2" foam to hold a few tools and knives but I want to see how this goes. I own an IT business so I need a place for a lot of spare cables and doohickeys, and this will secure them in the Bronco so I never have to worry about smash and grabs when I am the big cities. I do a lot of cross-country driving, and the utility of these drawers can handle not just work tools, but weapons and outdoor gear.