Lamplighter;
I had the MorRyde pin box installed on my Grand Canyon when we were at the Rally last year. I didn't order our GC with the Trail Aire hitch so all I had was the regular hitch. The MorRyde pin box made a significant difference in the chucking. It doesn't do much for the up and down shock like the Trail Aire hitch does. I had Firestone Air Ride on my last truck and Link Ultra Ride on this one so I've got a great combination. If you are coming to the Rally, MorRyde offered free installation last year. Maybe they will do the same this year. I think it was a good investment.