i currently obtained an ecotec that has only 16k on it. this engine came into my shop with an engine knock and the insurance company out an engine in the car. so i have a motor with a messed up bearing. so i need your guys help. i want to build this motor to be bullet proof. off the bat it needs a crank and while i a in there i am gonna do rods and pistons as well. does anyone know where i can get these parts i am looking for?
i took off of the engine the parts i wanted which consists of , exhaust manifold. fuel injectors/fuel rail, and the o2 sensor. this motor may be for sale after i am done with it. any help you guys can give me is appreciated. thanks

Eagle Specialty Products makes a crank and rods. Wiseco makes pistons.