As an Amazon Associate, we earn from qualifying purchases. 4.6L / 5.4L 4V Stage 3 CNC Porting Package Modular Head Shop . 4V-STG3CNC Gallery Attributes Brand name, Manufacturer name, ManufacturerModular Head Shop ConditionNEW Extra Product Name4.6L / 5.4L 4V Stage 3 CNC Porting Package keywordsmhs, modular head shop, 4v, cobra, mach 1, navigator, stage 3, cnc, porting, ported, heads, package, moq, multiple, tierMinQty11 MPN4V-STG3CNC qtyInStock-2 qtySourceFieldMap SKUMHS-4V-STG3CNC snippetModular Head Shop Stage 3 CNC Porting Package for 4V Cylinder Heads. Includes Stage 2 CNC Porting Program, Hand Blended Bowls to Seats, Bronze Guides, Performance Valve Job, New Viton Stem Seals, Manley Stainless Steel Valves, Stage 2 Valve Springs, Surfacing and Assembly tierPrice13599.00 Distributor offers SellerSKUMOQIn stockMultiplePrices modularheadshop.comMHS-4V-STG3CNC1-211 @ $3599.00