Classic STi power steering
 

Hey guys I have a ver4 STi and my power steering is leaking. There is a oily trail from under the pump, and down the timing belt cover. I've searched the forums and found Edelmann 8832, and the Gates 348414 has been suggested, but didn't say if it was successful.

Do I need any other seals to reinstall the pump back? Banjo washers?