Bump - since it appears a lot of people jumped on the MT group buy for these, including me, and this is a great post, I'm bumping it to add to it. With such a great post from @Bluetribal to start off with and a lot of other insight from posters I hope to add something, too. I'll start install in the next week or so, but the plan is to avoid the rivnuts altogether. While the challenges people have had with them are bad enough, there are some compelling reasons to skip them, one being the addition of a through bolt on the front feet rather than those attachment points on just one side of the frame, which does require drilling a hole on the inside the frame on each side. Another being the possibility I don't set one well and it ends up spinning after the bolt is in. I want to be able to remove the sliders easily if and when needed. I'll take @little_joe 's suggestion on brazing the nuts to a plate for the middle leg on the bottom of the frame. Re the comments on welding, for me I don't want to weld the sliders on at this point. I'm just not ready to commit THAT much to that item on this truck - it's still a daily driver for my wife. So that's not an option for me at this time.