If the dealership isn't a Buell dealer they can't order Buell parts, HD won't let them. I went through that several years ago after HD forced Buell on ALL the dealerships, then gave them an out a few years later. The HD dealership I have dealt with for years was one of them, and told me HD wouldn't allow them to order parts any longer. I'm friends with a lot of the people that work there, I don't think they were handing me any BS. FWIW...
But I agree with Soviet, if they are a Buell dealer they can get any STOCK part, anything that was originally on a bike. All the factory accessories are now obsolete.