Brand new ARP Main Stud Kit Part Number 134-5402 For SMALL JOURNAL 283 327 2 Bolt Blocks GENUINE ARP - ALWAYS MADE IN THE USA !!! Made From 8740 Chrome Moly Steel 190,000 PSI Strength Includes Studs 6 Point Nuts And Parallel Ground Washers Precision Rolled Threads See Our EBAY STORE For More ARP And Other ENGINE And PERFORMANCE Parts