The 164 flywheel I have dosent have the trigger wheel incorporated, IIRC its a bolt on part, that fits in a recess in the DMF flywheel, so the flywheel I have would need some machining to fit the trigger wheel.... cant be 100% sure though as I am a good few thousand miles away from the flywheel at present . Spare DMF flywheel might be the way to go, especially as you ar enot after out and out performance!