I went with a Flow Kooler Part # 1700. As advertised it should address any problems with my underdrive March Pulleys. Got it from Summit. Im still assemblying the engine so cant say for sure but I have high hopes.

Scott 1956 Dodge Custom Royal Lancer (408 Stroker, 4 Wheel Disc Brakes, Rack & Pinion, 6 speed) 2002 Dodge Ram 1500 Quad Cab 1976 Corvette