Milodon has a high flow mechanical water pump that fits the stock housing
Lift has virtually nothing to do with selecting a cam , basically you want a s much lift as possible for a given duration as lift is free , & I usually shoot for just over .500 lift on mild street engines , Duration controls how the cam performs & what RPM range the engine will work in with a cam , the intake carb & exhaust Has to match the cam for everything to work properly , What do you want the engine to do ?