They are nice guys. I also think like so many they have material shortages right now. I can tell you they worked, and worked quite well outside of a couple variations I made. I'm not sure there is anything out there that will compare quality and durability wise. Its probably easier to go with the one from FX4, but I don't believe that goes past the tranny. So just depends on what you're looking for. Unfortunately, after my exhaust work lately, I've become very adept at removing/reinstalling these, and man they are heavy. Like .5mpg less heavy (maybe).
If you do go with RCI, here's what I found worked best. I actually bought the full plate package for the 15-21' F150, but ended up buying the 2nd engine piece from 09-14' F150 later, as Tim stated it was just a little longer which made it line up easier. All three of the other pieces fit well, and as stated, for the front piece I added one additional bolt in the center using a factory speed nut/hole in the cross member but had to drill two holes in the plates. Not necessary but it ensure it wouldn't rattle on the cross member ever. I also had to drill one hole for the transfer case plate on the frame rail near the step bars. Not super hard but drilling through all that burned through my step bit for sure! happy to take pics again if you want to see some.
I think if you decide to proceed, calling again and asking to build a package that way would be easiest. He might even remember my conversation with him...