I'm in the beginning stages of fitting a Rotrex supercharger to my Audi 3.2 VR6. I'm considering a rear engine mount as one of my options with direct drive from the main crankshaft pully, which means I need one of these pulleys capable of running 2 belts. What are my options? Is there a pulley on another VAG motor like this thats compatible with the fitting to the shaft?? Sorry if this is a long shot.