| STM offer two pack kits. they don't consider that a dished plate is required for racing, only for road.
It's a lottery as to which you get i'm afraid. Other than than that, there's no differences.
If you find the take up is a little harsh, then you can buy a dished plate from Ducati or use the one from your old clutch to replace one of the 1.5mm plates in the new STM pack. | 
Threaded Mode