Need a little info and help here

DartSportGreg said

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.

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When i first read you comment, i thought to myself that you were wrong. I have had one 1974 dart sport, and one 1974 swinger. I am pretty sure that they both had an inset grill, but then I was thinking about it more, and I think the swinger had a grill the same as a 1973, but as you can see in the pic of the brown dart sport I had, it has an inset grill, and it was a 1974. Go figure.

and yes you are right about getting the header, that would fix the mounting holes not lining up.

Phil