I have been using these diff covers for a few months now and no issues. Although I haven't had to test their strength yet, and hope I don't have to, but I am confident now knowing they will protect. They are thick!! I also like that the design is not too large in the front so they have not rubbed on the track bar at flex (3" with no relocation bracket, rancho bars). The only thing you might need is a big enough hex for the plug. I found one in a socket hex set at Canadian tire.
Keep in mind these come raw. I used a wire brush wheel on a drill to clean with brake cleaner to wash them up before painting. Great covers at a great price!