Sharktooth Grill

1971 Duster, factory leaning tower of power car. Standard grill. I have a 340 grill for the car but I cannot get it to fit. It seems to be hitting the underside of what I call the valance pan (goes from fender to fender, bolts to hood latch support)
I do not know what I need to adjust. For some reason I am struggling with this. Ill add a pic. Not sure if u will be able to tell anything about it.
Standard grill fits fine.