This is a coil with a brass sleeve that is 1/2" D. I see that The Pinball Resource has a brass sleeve, but it is 5/8" D, and I don't the coil listed at all. Also, The Pinball Resource seems to say to replace the Bally bell assembly with a Gottlieb rig, but I really don't want to do that.
Marco's seems to say that it is cross-listed here, but this is a lot longer, and thus will not fit on the bracket: