Originally Posted by tighed1
The 192 came with the car.
The guy took a XF Crank pulley, turned it down and attached an outer ring (they make various sizes to adjust boost) from a Ford crank pulley from a supercharged Ford engine (Harley Davidson or Lightning).
Think there may be one other person running a 192.
Also if you contact ASP directly they will custom any size you want at your own risk for a price.