Head Bolts, ARP 135-3703 (Mark IV) 6306 Head Bolts, ARP 135-3707 (Mark V) 6308 Head Studs, ARP 235-4713 6307 Head Bolt Washers, Manley 6320 Stud Girdle, (AFR Specific) 6202 7/16 Stud Mount Rocker Arms - 1.7 Ratio (For Optimized Geometry) ...