ARP 201-4301 Head Stud and Nut Kit - R50,R53 ECU you will note that gaskets

you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned—something that won't happen with inferior quality head studs

You will also note that ARP® offers specially undercut studs for several engines

Front suspension wishbone lower balljoint sits 17mm lower

and alignment tool

and can be used on EFI or carbureted applications

ARP 201-4301 Head Stud and Nut Kit - R50,R53 ECU you will note that gasketsObtaining the optimum cylinder head to block sealing is especially critical in small displacement engines like the MINI, whether you are building high compression natually aspirated One Cooper engine, or for your mild Cooper S supercharged engine to that all out no bars turbo nitrous engine. That's why ARP head studs are popular among leading MINI racers. You should know that ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft"