if its the lower front cross member you need to change, then be very carefull!!! (ITS VERY HEAVY when the radiator is full of coolant) (i found out the hard way
You will ideally need to drain the coolant out 1st or look to see if you can jack up the radiator and AC radiator if fitted!!!!!
If you dont and then go and undo the crossmember the entire assembly will drop nearly a foot (mine did cos the clips and screws at the top member were not supporting it!) and you will hear a loud hissing noise as the AC fluid leaks out, cos you just ripped the pipework off its fittings on the offside.
Radiator cooling fans electrics(relays etc) are on the nearside behind where the earth strap connects to the mid crossmember.
As long as you get the radiator supported with rope/cable/jack(somehow) then ur ok, if not then its new aircon radiator +pressure release bottle and bigger bill!
Only a couple of bolts holding it on, just a pain as they tend to corrode badly. oh and mind out for the spring locking clips, there's about 6 or so on the both radiators.
oh and you might want to order some new clips for the aircon pipework that is held in place by the lowercrossmember (x2 wide black clips that hold x2 pipes each) they dont like being transfered, more a fit once part(to the crossmember). failing that some cable ties will save the day
best of luck