I have a 1977 R100/7 what some substantial wear on the rear drive splines. In doing some research I think I have decided to have Hansens's BMW do their signature repair to the final drive splines. Apparently there is a near complete absence of new rear wheel drive cups at the present time. Luckily, a good friend has offered a spare that he has had for a number of years. 

My question concerns the method of attachment for the rear wheel spline cup. Obviously this items was riveted from the factory. Hansens's offers this replacement method as well. But, the wait time is considerably longer for this service and I would have to ship my entire rear wheel clear across the country. I have read Snowbum's treatise on replacing the rivets with what he considers the appropriate shouldered aircraft bolts. My friend that has offered me the spline cup originally received the part from Oak Okleshen and it included a set of shouldered bolts. Being that Oak was such a highly respected member of the Airhead technical community, I feel these are the correct bolts. My concern, also voiced by Craig Hansen, is that even the correct bolts won't be able to provide the same level of performance as the correctly installed rivets. I'm curious to hear others' opinions and experiences with these two options. 

Thanks