The seats will bolt straight in however if the rear are split then you may need the bracket to joint them in the middle if your seats are not split rears. Also check that they are with seat belt pre tensioners as you will have to swap over your seat belt buckle bit so that you can plug in the wire to stop the air bag light coming on The door cards will fit but will require some drilling so that you can use self tapping screws to hold them on as the saxo ones are only held on with clips and the 106 uses a mix of clips and screws. A,B and C pillars are all interchangeable i believe or at least they were when i changed them on my car.