The RS3MB-F is a complete engine package from World Products that combines its S313-R engine block with various components to create a potent LS3 engine. The package includes a 4340 forged steel crankshaft and 4340 H-beam connecting rods, JE 9:1 compression pistons, a hydraulic roller camshaft, pushrods, lifters, and valvesprings. Additionally, this package includes an MAF and injectors, a GM LS3 intake manifold, and a Holley SF3000 fuel pressure regulator. The RS3MB-F is a ready-to-run package that ample horsepower and can hold up to increased levels of forced-induction.