I reckon, if it comes to it, I'll just buy one new.
What bothers me in this plan is that, a while back, I mailed an eBay seller who's (complete) cage had gone unsold (id not seen it, else I'd have bought it).
He told me he couldn't get rid of it, and ended up just cutting it up and taking it to the scrappies!
There are double cab cages on FB market place right now (have been there for months without selling) so I just keep thinking that, if I wait, a station wagon one will show up.
...but I'm still waiting and it has not!