Re: changing rad any tips
a couple of things, I take it your car is a 2000 model from your signature, it probably has aircon, if not above will be fine, if so, its a bit more work.
The aircon rad gets in the way, so the front of the car has to be raised, the front bumper removed, the crossmember supporting the rad removed and take the rad out from under the car. PITA I know, but thats the price of being cool.
As mentioned, get new jubilee clips at the ready as the Alfa ones will bet destroyed in sheer frustration.
May not apply as a later model (the mistake is usually with early cars) but early models have thermo switch for the fan in the rad which needs a 1inch hole near the bottom, make sure yours DOES NOT have that hole or your boots will get wet when you refill with water/antifreeze. The difference confuses many a part supplier, make sure you have the right one before you start. Guess how I found that out.
HTH and good luck.