Not sure what is going on with your fans, they are all mounted on the engine side.
Get a 42mm radiator from these guys:
http://www.ebay.com.au/sch/asi_performa ... ksid=p3686It is really really easy to do. An hour if you take your time. I did mine on my NB in about 20 minutes.
I was lucky that I did not need to remove my under tray as the clamp around the bottom hose was pointing in a conveniant direction that I could loosen it from the top.
There is a hole in the under tray under the drain bung. Remove the radiator cap so when you dump the fluid it does not draw the fluid from the expansion tank....just a bit more conveniant not emptying the whole system. Drain it in to a clean container so you can reuse it, you will need a bit extra to refill as the system holds a bit more with the thicker radiator.
Unplug the fans but no need to remove...note your system has been messed with so you will probably need to remove the front fan.
Pop the top and bottom hose off.
Couple of nuts n bolts at the top to undo that hold the radiator to the slam panel.
Just lift it straight up to remove it.
Transfer fans and mounting hardware to the new radiator and just drop it back in to place and you are done!