That's odd - I just threw away a Tandy catalog that had several sadllebag kits suitable for our bikes.
Just went to their web site and didn't see any !!!
Well, they'll send me another catalog before long, and I'll go through it and look for them.
You could always just get some heavy leather and make them - shouldn't be all that hard, they're pretty simple, Tandy sells all the stuff necessary (I do some leather-working).