I put one in my 73. I removed the headlight buckets out a rusted 70/71 fenders. drilled out all the spot welds, they line up easily in the 72/74 fenders. You have to trim the hood pad adjuster stud as they hit the newly installed buckets. I made a template off the old fenders to add the 3 headlight bezel screw mounts. It required a little bending and welding a couple tabs. No big deal. PM me if you need more info.
Doug