ARP main bolts oil pump clearance
I call ARP every time I do a stud kit and every time I'm told that my call is the first they've heard of an issue. Sometimes they send me a special nut sometimes bolts..... I keep calling in hopes that one day they will take notice provide a standard solution. I usually mill a bit off the rear cap and grind a bit on the pump housing. Then modify the stud and it will just fit.