ARP Head Bolt Kit For 1967 And Later PONTIAC V8 WITH "D PORT" Heads Part Number 190-3607 GENUINE ARP MADE IN THE USA !!! Fits : 1967 And Later Pontiac V8 Engines WITH "D" Port Heads HIGH PERFORMANCE Series Bolts Are 180,000 PSI Rated 9/16" 6 Point Wrenching Rolled Not Cut Threads For Higher Strength And Better Torquing Includes Parallel Ground Washers And Ultra Torque Assembly Lube Message us With Any Questions See Our EBAY STORE For Your ENGINE And PERFORMANCE Needs