For high performance head-to-block sealing, we offer ARP 11mm head studs (silver, left image) that are constructed using a premium grade 8740 alloy. The 11mm size is a direct replacement for the factory head bolts, no modification to the block or heads are required for use.
Both kits include necessary nuts, washers, assembly lube and installation instructions with torque specifications. Sold as set for one complete engine.