Help convince me to go BB in my Duster?

Very informative. I did a 440 in a 68 cuda 30 years ago abd fabbed my own mounts. Don't remember all the details though. I do remember even with the stock 74 low comp engine that sob would run also had the 484 purple shaft in it. Now I have a pristine 76 A body. Does anyone know if the power brake booster is moved up enough with the bracket it mounted to that it would clear the 440? Its the oem 12" booster. Still has the mopar tag on it. Car only has 69k miles on it. Also,anyone here got infor on putting the smaller Sanden type ac compressor on? Thanks!