Doable - yes
Should it be done - probably not
Would like to know the reason behind the conversion mate.
Anyhow here's the list of items you would need:
- transmission
- wiring loom and ecu
- axles
- center console
- instrument cluster for the auto
- gear lever assembly
- deletion of clutch pedal and installation of auto pedal set
There may be other items which may need to be replaced with the auto compatible variants such as:
- the intake manifold (not sure about the city but for the Civic EK it was different for auto and manual variants)
- cooling system
- removal of the hydraulic clutch system of the manual