ARP High Performance Series head bolt kits are tough. They are rated at 180,000 psi--15 percent stronger than Grade 8 fasteners. They come available with a reduced wrenching hex head or 12-point head that help eliminate the need for valvetrain removal when re-torqueing cylinder heads.

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ARP Cylinder Head Stud, Pro-Series, 12-point Head, For Pontiac, 400-455 cid w/ Edelbrock Performer D port Heads 61579, 61599, Kit

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ARP Cylinder Head Stud, Pro-Series, 12-point Head U/C Studs, For Dodge, 3.0L (6G72) DOHC V6, Kit

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ARP Valve Cover Studs, Stainless, 12-Point, Cast Aluminum Cover, 1/4 in.-20 Thread, Set of 8

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