Didn't take long to find
http://new.lrcat.com/#!/1234/90127/90555/7180/90781

Err722 gems
Err6600 Thor.

Why the problems :)

I recently replaced my shabby, old, Lucas fuel injectors (ERR722) on my 1998 Sagem (Gems) injector system with the Bosch 0280 155 884 injectors and I can confirm that these are, in fact, the cat's pajamas. They are plug and play, and cost less than the original Lucas injectors. Runs better than ever, slightly better fuel economy as well.

£35 each is not a bad price