Picked up Diamondback HD cover from FedEx Freight. Guy loaded it right into the bed and off I went. Install took me little over an hour because I did it myself and I'm short. A second person would make it easier. No drilling. Fit perfectly first try. For those that don't know about this top: both panels lock. it makes bed waterproof. it will hold 1600 lbs on top. you can add mounts to it like racks and a RTT. its double coated with Line-X that has UV coat. I've seem interior mods where folks add brackets to hold shovels, axes, hi-lift jacks etc... Its rock solid. Gas shocks make opening easy. And the panels are easily removed - one or both. And if you need to take the whole thing off - Two people would make the whole take off less than 10 min job - unscrewing the clamp nuts would take most time. Up next: Will add Mopar Cargo bed divider this weekend. The top and internal stainless steel locking bars or clamps don't interfere with the cargo rails. Then Frontrunner rack tracks, mounts and rack followed by RTT.