I used the Mar-K link assembly as per Kevin's post. They worked well. You have to cut a lot of material off the tailgate, which is a bit concerning, but's it's OK.
I believe Mar-K also sells hidden latches. I used latches from a marine parts supplier. Only issue is that the hook part of the latch can catch you if you use the tailgate as a bench.
Last edited by Gord&Fran; 12/05/20209:10 PM. Reason: obscure plate