Radiator Replacement
#2
You would be better off posting that question in the main forum section, but to answer your question to an extent considering i dont know the full reason behind you asking. You can find a replacement radiator at autozone or napa or even the junkyard, i wouldnt suggest buying one from the dealer because they are way more expensive than any other part's store.
#4
#5
its probably one of the easiest things up can change by yr self, 1.5 to 2.5 hours tops, just be sure you have all the coolant before you try it else yr kinda up **** creek if thats yr only vehicle haha. just unkook everything that is connected to the radiator and pull it out. id get a quart or ATF+4 while yr at it.