If you might be unsure, get some jungle jake or some engine cleaner and hose that front down real good. Then wait for the leak to start and see what it is. If it is coolant, it is likely your water pump. The water pump itself is easy to change out but getting your fan off of the pulley that is attached to the water pump will not be easy if you don't have the tool needed or the tools to make a tool that will work. The other pain is getting that shroud off of the radiator. It really is bad times messing with that shroud and fan. I just did it twice in two weeks.
'00 4.7 WJ-4.7 H.O. swap, SCT
'98 5.9 ZJ-vanco brake kit, SCT, hughes intake, DT headers, full Kolak 3" exhaust, 1.25" fr sway bar, 52mm TB
'00 4.0 5sp XJ-ARB/Ox locked, Ford 8.8, U-turn steering, armored, 6" lift