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Both come with 100% CNC ported 65cc or 75cc combustion chambers and 80cc exhaust ports with a 3/4" thick head deck (ideal for nitrous or blower applications)
AF999-10D-25
AF804-20BLK
AF105-10BLK
• Only suits 44mm External Wastegate AF9552-1001
Head Stud Kit, 12-Point Nuts AR156-4301 Pushrods & Guide Plates Both come with 100% CNCHead Stud Kit, 12 Point Nutsfits Ford Modular 4. 6L & 5. 4L 2V 4V AR156 4301 156 4301 CYLINDER HEAD STUDS It 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. Each stud is placed
