Kawai Seisakusho seat rails for full bucket seats for NC Roadster. These are compliant with safety standards and will pass a vehicle inspection if used with Recaro seats. I used these with a Bride ZETA IV. They can be installed with full bucket seats to a certain extent. There are scratches from use, but no cracks or distortions. #Roadster #FullBucket #SeatRails #Bride