I have a 2018 Express extended body so finding racks for this is challenging. There is at least one on the market that is welded but the original cost plus shipping was steep. This one arrives flat packed in a few boxes. Everything assembled properly per the instructions. For some reason I ended up with a ton of extra hardware (60 or 80 additional bolts, washers, nuts, etc.) some of which were not for this rack. They have been useful though for other projects. The rack is assembled in two pieces and then lifted onto the roof. This was mildly challenging with two adults and two ladders. Having the ability to move a little more side to side while you install would be useful so perhaps setup some rudimentary scaffolding or some type of platform rather than just using a ladder. The brackets that attach the rack to the rain gutter were a little tricky but some patience and a rubber mallet (recommended by instructions) we were eventually able to get each of these to seat properly. The sealant in the gutters is not even so you have to wrestle with everything to get it attached solidly. The brackets will seat into the gutter with the right amount of effort. The only real issue I have run into is the front fairing. The instructions state that you need to push it down agains the roof as much as possible to avoid vibration. It is currently set as low as possible given the cutouts in the side pieces where the fairing mounts. It is also touching the roof in some spots, although the shape does not allow for a tight fit. The fairing vibrates horribly at 60+ mph. It sounds like a lawn mower or something on the roof. The fairings are made from the same material as the sides which is easily flexible until the cross beams are installed. However, the fairings only get bolted on the ends so this large flat pieces of metal easily bows and flexes by hand or with the wind. The only solution I can come up with is to try and bolt a piece of angle across the back to reduce the flex. This should be included with the rack because the fairing vibration is a weak point in an otherwise nice roof rack setup.