Need a little info and help here

1973 -74 Darts, Swingers, Sports all use the same grille. 1975-76 use the same grille only the 76 has amber parking lenses versus the 75, which has clear lenses but uses amber bulbs. Also if you use the 1975-76 grille you have to use the 75-76 header nose piece(mounting tabs are recessed back further to accomodate the 75-76 grilles deeper mounting tabs. The brown 74 dart Sport in the above picture has a 1975 grille in it.