Damn it where's 7th gear when you need it?!
I presume there are different mounts for the version which had the ski hatch or were folding. My buffalo leather seats are of the non-folding variety without the hatch & have the same metal plate across the seat back. I'd say look for a used interior from a car with the same set up or just have your existing seats re-trimmed in leather.
A4 3.0 Quattro Sport - Gone & missed everyday!
Current road going missile.....
........Smart Roadster - arguably the most fun you can have in a car without using lube!!