You need to paint the service hinges body color, remove the door that requires hinge replacement and interior trim at the pillar, cut the production body side
Door Hinge, tape around the periphery of the body side hinge to mark the hinge location, place the service backing plate on the production hinge surface and mark the 3-hole pattern, drill pilot holes with a 3 mm (1/8 in) drill bit through the production hinge and body pillar, protect the interior of the vehicle and the adjacent door interior from potential metal grindings, lightly sand the body side hinge surface to locate the 3 production welds, look for witness mark, drill out the remainder of the production hinge without drilling through the body side hinge pillar, cut the hinge weld nuggets off, grind the pillar hinge mating surface flush, and then drill 13 mm (33/64 in) holes through the pillar.