In the photo below, it is the tiny caps, 3 shown, that I am after (left most lead) and a couple of the larger ones (lowermost lead)
If you have some old leads that you are chucking in the bin, then I can send you SAE for the caps.
ignition lead caps
note the novel use of squash balls
[Edited on 20/2/06 by 02GF74]