When you are building all that power into that Duratec 2.3L, you want to upgrade the head bolts to ARP Head Studs.

Obtaining the optimum cylinder head to block sealing is especially critical in small displacement engines employing high compression pistons, or power adders like turbochargers, nitrous oxide, and superchargers. That's why ARP head studs are popular among leading Sport Compact/Import racers.

When you go to put on that ported cylinder head or just replacing the head gasket, you have to replace the stock bolts anyway (most are one-time use, stretch to yield bolts in modern motors) so you may as well upgrade the bolts and save your investment in building your engine.

Fits 2.3L Duratec.