Bought an LS2 throttle body for my LS1 engine. Not as good I know, but will probably buy an adaptor to the LS1 manifold. Because of space problems I need to flip the throttle body over so the motor is on the other side. Bolt spacing look similar, think I can get it to work though. Was wondering; my old LS1 electronic throttle body had a 2 pin throttle plate motor, and then a seperate TPS which was 6 pin. The new LS2 one is 6 pins for all. Is there a TPS inside the throttle body motor section? Or, does the ECU just know where the throttle butterfly is because of the voltage it sends?