powersteering gearbox 73 in 72 dart ?

has anyone put a later 1973 powersteering gearbox box in earlier 1972 dart powersteering ? firmfeel steering on there website use 73 gearbox {bigger selcetor shaft} just change pitman arm? 73 pitman arm stud at drag link points up? 72 pitman arm points down? also idler arm is different so the drag link must be different too because the taper holes in the draglink would be on opposite sides and you can trun it over,anybody done this or have any ideals on drag link can you still get one is there anything else need to be changed other that powersteering hose's
Author: admin