Ok here it goes

I have a 96 EX My friend has a 95 SI. and he will give me his motor.

What all do I need to go to OBD1. If everything I read right should work I should be able to use

1. His OBD1 harness
2. His OBD1 ECU
3. His OBD1 Motor
4. My OBD2 car
5. SOmeones OBD 2-1 conversion harness

am I right. what am I missing. If I use his harness and ECU and Motor what all do I need?

Ius there any other wiring I am missing? will I pull a CEL light at all? and if not how will the OBD2 plug work when I do pull a CEL?

TIA