70 Dart Shark Tooth Grille Install HELP

My Father is trying to install a Shark Tooth Grille(complete) into his 70 Dart Swinger. What does he need to do or have besides taking the stock grille out and putting the Shark in? He states it is a tight fit between the headlight Bezels. Also the hood safety latch hole is on the wrong side of the grille. He does have the Duster upper and lower cross bars, are those needed? Any insight would be of help! Thanks!