Did this fix on my 74. You need to remove the door panel. First take off the inside handles then remove the screws that hold the panel. Assuming no power windows. You will need the help of a friend. Next step is unbolt the door from the hinge. Before you start, put some masking tape on the door edge and body. It will prevent chipping the paint as you lift off the door. With the door off just punch out the old pin and bushing and put in new one. It is possible that the pin will not clear the car body on the top, if so you will need to cut the pin. Put the new pin in from the bottom. Reassemble with lots of caution as you put the door back in place. Very easy to chip the paint. Align the door then lock done the attaching bolts. Replace the door panel. If you have the time lube the window and handle/lock. Plan on 3 to 4 hours. Good luck
