a lot of work.

1. auto to manual, you'll need a new ECU, pedal assembly and clutch MC as said.

2. you plan to throw an OBD0 motor to an OBD1 chassis. You'll need to make sure you have all the right sensor/emission equiptment if that matters in your state. It is illegal in most.

3. going from hydraulic type transmission to cable type transmission (chassis wise) may require a new cable conversion transmission mount

4. you may need new engine mounts as the rear mount may not bolt up from the DA Integra.

...and a bunch of little stuff that adds up.