68-72 to 73-76 front end interchange.

There's a couple of guys on here that have done it, the clip is a bolt on without any mods to the radiator support or inner fenders. Not sure about the bumper brackets though, 73 should be no problem but I think the 74-76 had the shock type bumpers and I'm not sure if the rails on those are already drilled for the earlier brackets or if you would need to drill them. There's also a member that not only swapped the front clip but also changed the rear of a 74/75(?) to a 72. Hopefully one of the guys that's done it will chime in with details on anything you might encounter.