So I ended up having my seat frame replaced by Toyota. So far the problem has been resolved, but we will see if it comes back after some Km's like it did when the truck was new.
I have been having this exact issue with my 2016 4runner with 7500 km's on it. It started doing this a couple months ago, I took it in to one of my local Toyota dealerships (Country Hills Toyota in Calgary AB) and they said it was "normal" and they all do this. I then brought the issue up with...
Looks like the roof line above the window on that "concept" picture is the same as the aluminum F150's. I wonder if they will use aluminum for this too?
That does make sense, cost is always an issue when modifying. I don't know too much about the panther chassis cars but is it possible to do a standard swap?