Multi-context site

HI there,

I have create a site in English using the web context.
I have also created a french version in a second context.
It's not a direct translation - it doesn't include the exact same page structure, but there are a lot of common template elements etc.
I just wondered how to handle various chunks throughout the site.
I have a header and footer chunk - both of which have wayfinder calls, which call specific resource IDs, which are obviously wrong for the French site - but I don't really want a totally separate header and footer chunk, in case I want to make global changes to it in the future.
There will be several other language versions in the future.

I just wondered what the best way to handle this is?

Thanks for any thoughts on this

Andy