coming into Nissan/infinity tech not knowing what you have is like dipping your testicals into a Parana tank with two great pieces of beacon hangin off the sides of them.
A better idea would have been to take a picture of the motor itself. not your sweet JDM bodywork then carefully explain that you guys lucked into this car and your not sure what you have and you want to learn. that way people can point out things that may be wrong from the comfort of their own homes before riding out to your place and finding out that some guy taped a picture of a turbo onto the side of your motor.
Provide some motor pictures and im sure some people here will be able to throw you some good knowledgeable advice just be patient.