Vibrant -12AN Flare to AN Straight Thread (1-5/16-12) w/ O-Ring Adapter Fitting Free Shipping then these head studs as

then these head studs as well as a good head gasket are a must to keep the cylinder sealed

Manley Subaru WRX/STi Valve Spring and Retainer Kit (w/o Valve Locks) (16 each)

Can be used as a weld-in or press-in fitting

please see 207-4206 for that use

Vibrant -12AN Flare to AN Straight Thread (1-5/16-12) w/ O-Ring Adapter Fitting Free Shipping then these head studs asVibrant Performance adapter fittings are lightweight and constructed from 6061 aluminum alloy. Vibrant Performance aluminum hose end fittings allow for the connection of Vibrant hose ends to almost any component. Our adapter fittings deliver quality, reliability, smooth flow, ease of assembly and the comfort of an anti leak seal and are designed to fit most popular oil pumps, fuel pumps, fuel filters and a wide range of other common components. All