What style of bushing?
There are QD, Dodge, Browning, and a several others. I have SolidWorks models of a few Browning and QD sizes created by measuring sample and using information in the catalog.
Fenner is preferred choice here in Australia, but any will do, mostly all i need is angular position and pcd of the set screws and guide pins. If it's not too much trouble you can email the browning models to engin_eer@hotmail.com. I'm currently looking at a Fenner 8065 285/282 dia.