I had the torklift unit on my 2015 which I traded in on a 2018 a few months ago.
I removed the hitch before trading it in but was unable to get the rectangular washers off the vehicle since they are fished into the frame and fit pretty snugly.
Long story short, I contacted torklift and they sent me another set of the custom rectangle washers that they make so that I can install the unit on my 2018... and only charged me for shipping. Great customer service!
Build Date: 2/18
Date in Service: 3/19