The gate for my unibody was a rusty/bent mess. Decided to build a smooth gate. Lower bar is DOM with oilite bushings for smooth operation against the hinge pins. The top bar is 3/4" square tubing. All the flat metal is 16 ga. Next step is a hidden latch system. Here's a few pictures.
Thanks for posting. My old International tailgate has a mix of bolts, brass filler, and fatigue cracks. Grandpa kept it together on a budget. Now I have some ideas.