Making Automotive Dreams a Reality. Mitsubishi Eclipse / Talon DSM. Mitsubishi Evo 8 / 9. Subaru BRZ / FR-S / GT-86. S not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to? Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. Questions about this item? International Buyers – Please Note. We welcome your inquiry!