You can try David Silver Spares, another solid source for vintage Honda parts.
You can try Johnny's Vintage Motorcycle, another solid source for vintage Kawasaki parts.
You can try Suzuki Partshouse, another solid source for vintage Suzuki parts.
You can try Partzilla for the OE option.
You can try Jets R Us, an excellent source for carb internals.
You can try Buchanan's Spoke and Rim. They are the best in the business when it comes to customizing rims and spokes.
You can try Diablo Cycles. There is a good chance that they will have the items you are requesting.
You can try Paintworkz to see if they have the correct paint selection for your project.
You can try Delkevic to see if they carry an aftermarket system for your motorcycle.
You can try Cycle Electric Inc, a great source for Harley Davidson charging components.