I went to install the new correct clutch that finally came in. Torqued bolts to 18 ft/lb and one snapped off. Looking for new set of ARP bolts. The bolts have a shoulder and I don't think off the shelf grade 8 bolts will work. Can't find a 312 application on line. The ARP website doesn't list them. I have found ARP bolts for 289-460 application that are the correct 5/16x18 and .780" long but mine are .875 long. Will these work or they too short?  Anyone have an ARP # for these?