Not sure, but I believe the bumper and front sheet metal is different enough to keep you from bolting in a 71 grill. Also, the shark tooth grill is pretty hard to come by. I am looking for one myself. If you can have a standard 70/71 grill laying around, give it a shot. If that one fits, the shark tooth grill should also fit.

j

srry fyv sharktooth grille will not fit in there right unless you change the whole front end you might be able to get away with just the hood, grille support , i put one in a 72 and if i rember right i think the grille mounting areas were redesigned along with the frt ends on 73s & up