Converting from a 1600 to a 1600 (OT)

[SandejasI]

Afternoon all,

Just wondering if you listers know what is involved in registering a car
whose engine has been changed to one of similar capacity but say a twin cam.
Now the reason I ask this is because I am wondering what I would have to do
to get my twin cam corolla (daily driver) registered if I put a 20 valve in
it?

I figured people might have similar experiences such as an SR into a 200b or
bluebird??

Thanks for any help..
Iggy Sandejas
Sydney NSW
Datsun 1600 FJ20t