I talked with Cliff about this over the phone last year he told me the mold / template was brocken and there was not enough call to make a new one.
The front pipe should be the easyer of the two to make any good muffler shop should be able to help you out.
Antique cycle supply shows a K model set in thier catalog. Chrome repop, $?. US PM me for price I don't know if they are still available, but this is a new catalog, so I would think you could get the set.