Just bought my first Audi and got a million and one questions. Here's question no. 1.

Got a 2005 A6 SE saloon with the basic cloth interior but would like to change it for a leather one. Will the leather interior (particularly the rear seats) from an A6 avant fit?

Mine has fixed rear seats which do not fold flat. I would imagine that the seats from the Avant fold down hence for 40-60 split. Will this cause me a problem? Do I need additional fittings from the donor car for the seats to lock onto.