Came to the wrong place to ask such a big question! Anyways atleast you found one of the few people on this forum you can help you regarding this question.

1st of all here it's a couple of helpful links:

http://www.sr20-forum.com/showthread.php?t=2474

http://www.sr20-forum.com/showthread.php?t=33


There isn't many parts you can use from the 1.6 motor. You need to get the Engine harness, ECU, Motor, transmission, motor mounts, crossmember, axles and if you are real serious about making it perform like an se-r you need to get rid of the rear drum brakes and se-r sway bars. This is a short list of the main items that you need to make this happen.