/bcforum/images/%%GRAEMLIN_URL%%/iagree.gif What Tinkerman said. Your best bet is to look for a set of factory curtains that need restoring.
Two things you probably already know, but just in case: There are two types of mounting for these - wedges that are held in place by thumb screws for TR2's and 3', and the more positive Dzus locking for the 3A's and B's. Also, stay away from the aftermarket curtains. Easy to spot: aluminum frames with rubber flaps around the outside of the window portion.
Good luck on the hunt!