I have a set of bag mounts you could have for cheap.
I know of two different bags that mount to these mounts, and there are probably more. The Krausers, as you mentioned, and the BMW touring bags, which, IMO, are a better bag. They are deeper, so you can fit a helmet into them. They fasten to the mounts more securely, and the latches that hold the lids shut are also more secure.
You don't have a LS model, do you? That complicates things.