Im sure ive read before, on Pistonheads IIRC, about a B7 RS4 which had the wingback seats either stolen or, because he had taken steps to prevent them being removed vandalised, and you have to buy them in component form and build them up and the cost was about 12k due to 120 hours labour at Audi!!
I thought the Mk5 wingbacks were made by Koenig??