Nothing to swap I'm afraid, we only have one micra so it's probably best to keep hold of the tailgate! Really don't have much idea of what they're worth but based on the lowering spring price I'd offer £20. Can you post?
I wouldn't write it off, I get around a bit with work and we have vans up and down the country, can you be more specific than west yorks? Also you got 13s or 14s? Idea of cash would be handy too.