See Bentley, The center mount I refer to as on the floor pan you can see in the photos in Bentley on pages 50.9, 50.10. See that little guy, triangular shape on the floor? Hope it bolts in. Can't tell in the photos. But, are the later 100/A6 seats interchangable with a type 44 car? 'Cause then maybe a Recaro mount for an S4/6, which would have had them anyway, well maybe that could work. Neil