shim the hinges at either the body or the door using thin washers, and loosen the stricker bushing and re align it with the new shimmed door latch height.
you can either shim just the bottom hinge or the bottoms of the top and bottom hinge to compensate for the pin and bushing wear.
the only other thing is to remove your old pins by taking out any clips and driving them out, or cutting the pins and removing them that way. with the door off you use a hammer and a punch to remove all the old bushings, use a hammer to lightly tap the new bushings into place, then install the new pins and reinstall the clips. to replace the bushings and pins in both doors is about $25 and only takes an hour or two.