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Compatibility: Bolt on for HEMI 6.2L, 6.4L, and Restomods Configurations: Naturally Aspirated, Twin Turbo, Supercharged Features: Professionally machined and assembled by Don Schumacher Racing in Brownsburg, Indiana 1200+ Horsepower Rating on 93 Pump Gas. Great Option for DIY Enthusiasts and Performance Shops Precision Machined and Torque Plate CNC Honed by Don Schumacher Racing with Rottler H85AXY. Designed for Restomod and Modern Vehicles. Compatible with OEM and aftermarket Supercharged Gen 3 HEMI swap kits. Specifications: 426 Cubic Inch BGE GEN III  10:1 Compression Ratio Deck Height: 9.280" Callies Forged 8CW Crank Callies Extreme H-Beam Rods DSR Custom CP Carrillo Pistons (0.005" in the hole) Total Seal Rings ARP Main Studs Options: DSR Custom 426 Cam NOT INCLUDE: Cam Timing Cover Front Drive Pulleys/Dampener Oil Pan Cylinder Heads/Valve Train