Procharger Pulley Offset

Does anyone know the input shaft diameter for a P1SC Procharger? I also need to know the correct offset. I have a pulley I can measure if someone could instruct me on the best way to measure it. I plan to order a custom made pulley and have been asked those two questions. I have been unable to find any information concerning the shaft diameter or offset for pulley on Stangnet or any other source on the internet including ATI. Thanks in advance for your assistance with these questions.

Thomas