Nice. Just don't go on a long trip. I had cracked coils and both failed a day after riding in the rain. I was in another state, so ... very inconvenient, to say the least.
By the way, if you have the factory electronic ignition with IC igniter, then you want the gray Dyna coils (2.2-ohm). Green may work, but the Gray ones are a better match for the electronic ignition.
If you have points (I don't think any 750-4's had points), then you could use the Emgo coils. They are way cheaper, and I think Z1 has them.
