Thanks. There’s loads leather on ebay for B but very few for A.Hi Martin
Yes, the seat are the same, similar to most parts, other than body panels, lights and the steering wheel.
Even parts not listed specifically as compatible, e.g W245 rear boot trim with chrome inserts, fits perfectly in W169 ...
The seats options were exactly the same, including folding armrest for the 2-seater rear ones (never found one).