Thanks Matt for checking this out. What you have come up with essentially confirms my thoughts and the thoughts of Member Chris Bell who has had this figured out too. I think the easiest way to do this is to use the K7003801 kit, or the Sachs Power Clutch rated at 325 lb/ft, but for me it was more complicated.
I think we are thinking the same way. I was originally going to use a South Bend kit like most guys recommend, but they report rattle too, and when I called SB, the man told me all their TDI kits uses the Sachs VR6 disc as a foundation and that they line them with various friction materials depending on Stage I II III etc. So then I started looking around for the TDI Sachs 1878-043-141 disc and sourced one from MJM Autohaus.
So then I did in fact call Aaron looking for a VR6 pressure plate thinking the increased clamping force would be the ticket, but he suggested I call his guy Scott of DC Clutch here in California. Scott told me he uses the VR6 pressure plate as a base, then has the diaphragm heat treated in varying degrees for Stage I II III. I opted for Stage I which he tests at about 350 lb/ft, which is at least 100 lb/ft more that my car makes at the moment. He said to expect increased pedal effort, so I ordered a boxed release lever, even though he said the increase would not be huge. You need to use the Sachs release bearing.
As an aside, I always wondered about the reports that the VR6 PP setup feels "lighter than stock". Scott's comment was you don't get increased clamping force for free, and unless the fulcrum point is changed, a stronger PP will feel a little heavier. Maybe the comments come from people changing from DMF to SMF setup- I don't know. I don't have a problem with some increased pedal effort.
I have all the parts together, but am still waiting for the pressure plate which should get here this week.