These Keihins frequently show up at swap meets, and H-D dealers and shops keep them when upgrading.
Don't make an offer, let them tell you what's fair, I've had great luck getting obsolete stuff cheap.
Important to get 3 exactly the same, they have H-D part numbers on them that show up in H-D parts manuals.
Get the aluminum manifold and rubber coupler too, good start for manifold stub.
Use only very low fuel pressure, they used gravity on the bikes.
