the rotation won't change with the inlet swap, read the info on summits or jegs site, they do list the rotation. the electric pumps only run at one speed and do suck juice.
they do make for a nice clean engine look. some guys use them on the street. i'm not a big fan of them. i would save my alternators juice for a good fan set up rather than an electric pump. moving more air over the radiator will help you at the lights, not the pump.
most overheating is due to not getting the air from the grill to the radiator in enough volume to keep it cool. so a good air moving fan and a shroud is where you should be looking. the mechanical pump will move all the water you need
ya know i'm going to have to charge you one quart of Rudy's cole-slaw for this info.......
....damn i miss Rudy's