Does anyone know if the DMF fitted to the 140 BKD/BMM is the same as the 170 BMN engine?

Looking at clutch kits and maybe a DMF and it's rediculously confusing as even AUDI don't know until the gearbox is off whether it requires and LuK or SACHS type fitment. I've gathered that hte clutch and pressure plates ARE the same on the 170 as the 140 but the flywheels I'm not sure about. I'm sure I read somewhere that the 170 has a different type of flywheel?