Hi Dave,
If the above lead doesn't work out, I have a set in the spares cupboard, removed from 1994 Defender 300tdi head, when the head developed a crack. Head was replaced with a another from a Disco, complete with injectors, so didn't need the old ones.
Located south of Jedburgh, near Carter Bar, but I travel throughout the south of Scotland with my work.
PM me if you are interested.
Cheers,
Ross.