While having a bit of a search this morning for info on igniter units for my z750 dirtbike - I found this page.....
It is an absolute goldmine of information for anyone who is contemplating engine/suspension/frame/ignition modifications to any of the old z750/GPz750 models. Some of the info is also relevant to z650's, and it would seem that some parts off Zephyr 750's will now be in big demand as well !!!
Here is the page