ARP main studs

Had this exact problem when I put studs in for my 360. I called ARP and bought one of their bolts for the rear main cap. I definetely wouldn't grind the nut and stud down. It has to be as thin as the original bolt head for the pump to fit. ARP knew about the problem when I called them, but they didn't say why they don't put this info in the box of studs. I thought this was a good option for my setup. I guess you could fabricate a spacer for the oil pump, that also would work as long as you had oil pan clearance for that. Don't know if there is enough clearance there or not for something like that. Or you could machine down the main cap, I don't know what that would do as far as maintaining good overall strength.