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If your setup is stock
Invidia N1 Exhaust Systems are also designed for the most aggressive looks
we rotated the view by 90°
See part number 57-10001R or 57-10001D for those models
which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice)
ARP Cylinder Head Stud Kit Engine Bottom End Internals If your setup is stockIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is placed vertically in special racks and precisely heat treated to 200,000 psi. This procedure ensures complete heat