Dodge Big Block Supercharger

Hi there, great deals there. Quick question. If your converting to a 440 RB, why not use the supercharger on it? It should mount up in same location as the b-engine.
The brackets are different for a low deck and tall deck. You bolt the main bracket to the head but the other brackets utilize holes in the front of the block and water pump. Plus the engine I am going to run is a high compression engine, too high for supercharging unless I went to E85.