Unfortunately, it could be coming from Ed's supplier as they are manufacturing a lot of stuff overseas now.
That's what I was wonder, same kit just not sold under the Edlebrock name.
BTW in my experience unless the carb has been completely trashed they rarely need anything replaced.
I bought this one used and it's kind of dirty. It will probably run the way it is, but I would like to clean it up. I have another one on a different car that I bought new in 1994 and it still runs great even though it's never been rebuilt.