Thanks chaps
The eye on the little cable thing could go behind the the sort-of-mushroom-shaped guide for the shoes, but i'm certain the springs are right- they have too small an inner radius to go at the back.
The bottom spring came with the set and there's no left-overs. It certainly fits nicely, it has little kinks to clear the adjuster and feels under nice tension.
I've just found this guide to Ford Ranger brakes-
http://zenfixit.com/?p=285 which shows an identical setup to mine, i reckon i got it right

No-one will believe you...