I am thinking about doing one of these swaps. But my car is an automatic transmission. Can I still swap in one of these engines. Also, I know they are 3 types of Japanese Spec. SR20DE-T engines. Which one of these will be a better application for my 1987 Nissan Sentra? Also, which one will put out more horsepower? I am also from Southern California, so if you know any shops around the Orange County or L.A. county that can do this swap, please give me some address or phone numbers. Thank You For your time.