I am preparing to do my 120k mile service, timing belt, drive belts, water pump, spark plugs, cam cover gasket if needed, I have a set of spark coils on the way in case I need them, I am also changing the oil in the transfer case front and rear diffs with Redline oils.

I said all that to say that I purchased a new water pump off ebay which was advertised as a dual overhead cam, I had it for some time before I purchased my new timing belt, it was obvious that the sprocket was incorrect when you compare it to the timing belt. I went to O'Reilly's Auto Parts and purchased a new water pump for the dual overhead cam for $85.00 and when you compare the two pumps side by side there is quite a bit of difference in the two pumps.