I have managed to ship in base frames that bolt directly to the factory seat bolt holes, and are designed to accept the runners from Recaro. The base frames are made by Idealseat company of Melbourne Australia and are approved by their transport authority. The seats came from Recaro, and it was not easy, I will just mention that the local distributor is not good with customer service, and it is sad to see a company such as recaro being represented by them.
The seats are manual and don't have very high side thigh bolsters, they are marketed as orthopaedic seats, and are great, I am sure to transfer these to my future vehicles....if I ever find something better than a patrol.
