I've had the camper for about 3 months now and I decided I needed something stronger than the factory turnbuckles to secure it to the bed.
The camper is typically secured by turnbuckles that attach to (4) forged eye bolts and aluminum backing plates. Unfortunately, the turnbuckles need to be checked often and can bend or shift under hard impacts. This allows the camper to move slightly in the bed and the turnbuckles to possibly fall off. I've had my camper move twice and the turnbuckles have stayed perfectly tight.
I didn't want to worry about the camper so I reached out to 10/40 Overland in Wildomar, CA to have my camper bolted directly to the bed. This prevents the camper from shifting or moving at all. They installed (4) 3/8" stainless steel bolts and aluminum backing plates. I also kept the factory turnbuckles which makes 8 total attachment points.
This camper isn't going anywhere! Very happy with the work done by 10/40. I highly recommend them if you're an FWC owner or looking to purchase one. They know their stuff.