Hezb

Hope I have posted in the right section and any help will be much appreciated. have what I think is a adwest steering box that had tdci chalked on the side. I don’t know how to confirm that it is a tdci box. All fitted apart from the pipe to the resivior the connection doesn’t seem to fit, I have a 200tdi engine. my question is how do i confirm model of the box so I can get the right connector or is there another way to do this?