I am trying to learn all I need to know about getting a turbo for my car. I see some people selling them on Se-r.net but what do I need to know to make sure I am getting a complete and working turbo? What are all the basic components needed for it to be operable? I know about the turbo itself and you also need a turbo manifold. Is it wise to buy a turbo from someone over the net or would it be best to buy it from a national company such as JWT? How much should I expect to pay?