Brey Krause R-9063 Offset Seat Side Mount Bracket - Recaro SPG, SPA, Pro Racer SeatThe Brey Krause R 9063 Side Mount Adapter Kit allows for the easy installation of Recaro SPG, SPA (including Profi models), Pro Racer Hans, and Pro Race HANS SPA Racing Seats into your Porsche 911, 924 944 968 and 996 997 Boxster Cayman OR Corvette (w BK Adapter R 9144). The offset design of the seat bracket allows for the seat to be mounted closer to the center tunnel of the car. This is ideal for some builds that still retain the vehicle's interior.