[Arran]

I think that I would probably restore it, since the majority of caps are inside a potted metal can nobody would be able to see the replacements anyhow. As for the speaker I've seen people manage to repair or replicate pot metal parts. Even if that were not possible who says that you have to tamper with the matching speaker anyhow? I would just get a similar high impedance speaker from another radio, like an American Bosch, plug that into the set and play it through that.
Regards
Arran