best now you can replace your classic ford engine with a remanufactured stock ... engines feature · bake cleaned heads crankshafts and blocks · heads are magnetic ... and twist with pin bushings replaced · crankshafts are checked for bend ground to size ... main bearing bore to assure proper crankshaft clearance let marshall engines build ... and sonic tested for thickness · new scat cast or forged crankshafts and rods · ...