I put a '75/'76 grille into a '73/'74. The headlight bezels are different between the grilles so they have to be swapped as a set. The '75/'76 has a "filler" attached underneath because the bumpers stick out more (shock absorber style bumper brackets). Not sure if a '73/'74 grille will adequately fill that area. That's the only issue I can think of. It's been a while since I did it.