For swapping to auto trans you need the following
a. gear box
b. auto variant ecu
c. pedals
d. radiator
e. auto shift lever
f. auto cluster, etc.
If you can find all the auto trans parts from a PKDM civic, then it will be relatively an easy swap. However if you go for JDM parts, then it may be hard to successfully swap the auto gear, until and unless you already have a JDM setup (engine + related parts) in your car.
This model mostly came with a CVT gear from japan, conventional auto gear may be difficult to find. However, JDM auto gear from a 92-95 civic can also be matted with it.
You also need to modify engine bay wiring to hook up the shift solenoids etc.
I am also planning to switch to auto setup, so far I have done the following:
a. auto cluster - installed
b. auto cabin wiring - installed
c. auto radiator - installed
d. auto geat shif lever - purchased
e. auto gear - to be purchased
f. auto ecu - to be purchased
g. pedals - to be purchased
I already have JDM D15 engine in my car.
Please wait for the experts opinion on this matter as going from auto to manual is much easier than other way round.