Got a piece of the original factory molding here along with the replacement molding that Kirban sells. The only significant difference is that the Kirban molding has kind of a pebbled texture to it where the original factory stuff had a kind of random indent type of finish. They are reasonably close in all other respects.
The door molding stops 1/2" from the front of the door edge and 1/4" from the rear edge of the door. It also has those same 1/2" spacings from the rear edge of the front fender and the 1/4" spacing from the front edge of the rear quarter. Distance from the body crease is 8 1/2" down to the molding on the doors, 8 1/8" on the rear quarter and 7 3/4" on the fender. Other than that, just line them up so they look straight.