OK sorry to get back to everyone about the results of my radiator conversion. The news is all good though.
The radiator i believe is out of an AE92 or there abouts corolla. My mechanic just said it was from a later model corolla and it is slightly wider. The hose outlets are not in the best spot for my engine (100kw 4AGE from corolla) but a bit of pipework and the setup worked fine.
I am using a simple aftemarket thermo fan that was already on the previous setup.
Once we took the old radiator out we could feel how much mud and shit was really in it, this and the fact the core was pretty wasted was the main reason for upgrading.
I haven't taken the car out for a good test drive but i let it idle in my garage without any airflow for 10 to 15 minutes and the tempurature stayed nice and low. Even after alot of heatsoak it still sat low.
As far as fitting went i just cut out a corner of my battery mounting plate and i had to make up some custom radiator mounts (from 2mm aluminium). The piping can be sort from Supercheap and if need be an exhaust shop can supply some nice stainless piping bent in all the right places.
I will move my battery to the boot but only because i am using such a big battery. A smaller battery would still easily fit in the factory location. I will have some photos to show soon.