ARP HEAD STUD KIT TO SUIT HOLDEN CALAIS VZ VE VF L76 L77 L98 LS3 6.0L 6.2L V8ARP head studs greatly improve head to block sealing, which is important in engines with high power adders such as turbochargers, superchargers or nitrous. They can even be a great addition to a mildly modified build as insurance against failure. These studs will last for the lifetime of your LS engines, making them a great investment! Contents: ARP Head stud kit Vehicle Fitment Guide Notes: The image is for illustrative purposes only. ARP head stud