no, his girdle just sits on top of the main caps. I have heard you need to get the mains align bored any time you add arp main studs. ARP suggests it on there touque spec sheet that comes with the studs. I costs a good amount of $$$$. I would spend the $$$ on an external oil pump and forget about spinning bearings. the external pump will produce more flow and higher pressures than any honda pump, almost eliminating spun bearings. I have heard too many mixed feelings when it comes to girdles.