As mentioned above, the grills won't interchange between 67, 68 or 69 but you can swap out the whole front clip.
My 67 has a complete 68 grill assembly and 67 fenders. And no, it's not HACKED into place either.
My 68 had a 67 grill and headlight bezels and it fit no problem. 69 might be diffirent.
67 to 69 are the same front end clips all parts are interchangeable