unless someone is parting out a bike, no one lets sidecovers out of their mitts. You can try a meier cover, some people think they are ok, some hate em. I have them and while not the best looking, I like the screw on aspect.
You can also find some on ebay from a company called LPM I think. They are exact replicas I think and many really like them. They are pricey but you will not get a side cover cheap no matter what unless it is a meier. They are in too much demand.
The ride IS the adventure. The destination is just to get gas!