You would need to change the front bumper brackets, get headlight support pieces(don't remember the real name), headlight buckets. The spots where the grille connects to the header panel are close on 72+ header panels, but it might require a little creativity to get them all lined up. I did it on my 72 and it worked out pretty well, but my header panel was pretty much shot, so I could adapt without having to drill any holes in a good piece.