I found this website for a place that sells new carbs for $210. They aren't exact copies of the originals, but for guys that just want to bolt on a good running carb, this might be an option. Apparently it does away with the GAV adjusting knob, which some people (me included) like. Some guys on fordbarn have posted that they are using them and like them. FWIW.
http://www.autotestsys.com/Merchant2/me ... e=ZEN13922