I'm a new owner of a 2001 f650gs single spark BMW. It came with the nice, larger size BMW saddle cases but I would like to add a rear rack onto which I can bolt a Pelican case or something similar. What options are out there? It seems like most everything is made for the newer version of the bike. Are the stock BMW top cases and mounts still made for this bike? I'm assuming they're quite expensive compared to getting a rack + Pelican, if they are even still available. Thanks!