so most of u kno im puttin on afr185 on the 331,so i ordered new head bolts an header studs,heads went on mint than i goto put headrs on an the studs are fine just the nutz summit gave me are the size of lug nutz so thats all im waiting on now i called summit there gonna ship smaller nutz 12point but i still dont think theyr gonna fit, anyone else run in to this problem,i just wanted header studs for easy swappin to long tube headers during the spring