Brey Krause R-9772 Seat Side Mount Bracket - Recaro SPGxL Seats To Early Porsche 911The Brey Krause R 9772 Side Mount Adapter allows for the installation of Recaro SPG XL Racing Seats to the factory rails of early Porsche 911 (app. 1964 1989) models. The design keeps the driver as low as possible, while the 4 mounting points provide a wide range of incline decline options. Note: These adapters will only fit the early 911s where the seat rails were situated off the sides of the seat bay. Fits either Driver or Passenger side.