340 Water Pump questions, anyone using Flow Kooler?

I run the flow kooler on my stroker engine with a recored stock three row radiator, reproduction fan shroud, 180 degree Mr Gasket high flow thermastat with three 1/8" holes drilled in it, and mopar performance viscous fan packaged. Even with 391 gears and the aluminum heads it runs nice and cool on those hot summer days.