Yes you can utilise the standard Dissy, it is necessary to file the protruding ridge off the dissy back plate and drill and tap the VVC blanking plate to mount the dissy and backplate in a position to miss the blanking plate fixings. As the position of the backplate has to be rotated through about 20 degrees to do this you will have to retime the rotor arm/cam plug to suit the new location. I am planning to do just that on my head. I can`t see any big advantage in going dissyless, it will cost to have my M3d modded, new coil pack and leads and at the end of all that your spark plugs will burn away twice as fast.