Old Brits has it for ordering parts, but get a Norton Factory Manual for gosh sakes, everything is by universal p/n. Do learn the quirks of your model of course.
There is also Norton's Owners Club Tech Notes that detail quirts and errors and upgrades to be aware of across the model years. Cdo's give sweetest rides of any bike to me. I wish I was faster to keep them going is all. Like your flywheel there are time bombs in factory issue and owner assembled things, no way to find but break em on the road or eliminate soup to nuts. Takes me years to save and turmoil a fully fettered Cdo, crank to tank finish.