Some manufacturers share parts. Like my mate bizzle (on here) has a autoshop and sells quinton hazel clutches and he took one out to show me that it had a luk clutch in it (my dad used to work for QH and he usdd to make the pressure plate (cnc setter/operator) so what QH have done is buy the clutch from luk or sachs and make the pressure plate themselfs (QH)