I've looked into S&S couplers and they look great, but I'm looking for an option that will work with the bike I current have. I don't have the money or space to buy or build a new bike. I was hoping to find a case that will work for what I have. I may even build a custom case from scratch. Like a music "road case" used for touring musicians but designed to fit a bike and be within airline restrictions.

I wanted to see if something like this existed already.