If the pump is the same internally (impeller, intake, outlet, etc.) than we are only talking different motors and different RPM ranges here. Correct? If this is the case than we don't really need to talk about a specific model but instead a model range (e.g. RD20/30) and then specify what we need in terms of flow and head. From there we can derive what sort of a RPM range the DC motor will need.
Do you guys think this is the correct way to go about it? Anybody willing to tear apart one of their own pumps, try to install a DC motor, and see how it works? A sacraficial lamb to the watercooling community if you will
