arp has studs, but they are longer than stock. i use kyokugen lug nuts which are open faces and allow the studs to protrude through them about 1/4 inch.
you should never have a problem when using this combo since the nut is fully threaded on the stud.
stock studs dont seem to offer enough thread engagement and dont withstand the loads due to it.
summit racing carries the arp studs, but i forget the knurle size offhand