While your at it grab some HQ ones. (also some shorter HQ support wire ropes). HQ ones are flush fitting to the tailgate. Compared to the later model ones which stick out much more.

As Bob said already. You will find if you drill out the plug weld holding the pin from one side that once you punch out the pin it will be quite worn in the middle. Get a new piece of rod tap it in and re-plugweld.

But as said unless your wanting to stay period correct to a HZ etc I would grab the HQ ones. They do look MUCH neater.