There has been a bunch of discussion on water pumps on Moparts. The consensus is that the cooling system has a bunch of restrictions that limit total flow and that if you are trying to get a hot engine to run cooler, a high flow pump will not make a big difference alone.
If you want to modify a pump to work better, here's a thread that might help. This is not as simple as bolting on a different part number. In these days of "make it cheaper" not "make it the best with the latest technology", you gotta roll your own on some stuff... http://www.slantsix.org/forum/viewtopic.php?t=44277&sid=7c4a896528bbf40b0adfdfc7750ef911
Thanks Rod...i have got some reading to do. Its my daily driver so was just thinking with a new radiator in i would improve whatever else i could pertaining to the cooling system.