Assembly was smooth. Took an hour. I’d highly recommend having a drill otherwise it’s probably 3 hours. I drilled/bolted it to my bed rails. I personally wouldn’t feel comfortable just clamping it. The fit and finish is good. The highest setting is higher than the roof of my ram 1500 but not higher than the shark fin antenna. Won’t be a big issue my rtt will just have to go an few inches to one side. It’s amazing you can still use a tonneau cover with this rack for this price. My recommendation for TUWA would be to have the side mountain cutout pieces as an additional option to lower the cost of the base rack. They aren’t my style and I would rather just have the rack at a lower price.