I am a bit of a perfectionist so the install process was time consuming, for me. But after some adjustments I was able to set both panels exactly how I wanted. The panels are sturdy and can easily hold two rifles (carbines on the 15x25 with the stiffener bars). I connected the head rest mounts a few slots below the top of the panel, which brought the whole unit up to the desired height. Works great. I am very impressed at the overall quality and durability. They do not shift or bounce when driving, regardless of the load. They are very useful for mounting just about whatever you can imagine and make organization extremely easy. I have had them installed for a few months and they have not sagged or shifted from heat or weight. The weapon mounts are slightly small, but can fit around most hand guards, if your accessories have space. Despite that, I love them. They are fast and sturdy. My rifles do not move at all when going over tough terrain. I couldn’t be more happy with this product. The helmet hook is great for smaller bags and helmets. (My 24 hour pack was a bit too heavy). I currently use it for a sling and helmet hanger, and it works great. I recommend getting the large size butt stock cups, if you want to go that route. The small ones would likely work fine, but I have multiple rifles and a few of my butt stocks would be too big for the small cups. But they all fit in the large cups without issue. These are worth the money!