Karboy:
I figure such a jug isn't manufactured anymore, because there's no practical use for it. Glass isn't used in transport anymore because it's fragile & heavy (think: plastic soda bottles). Straight up glass isn't used in the scientific community also because it's fragile, doesn't handle heat well, and because it can be reactive (though you might not think so). Also, transparence often isn't necessary. I got one of those pyrex jugs second hand; the opening is only about 2.25 inches. I was able to find a perforated stopper for it, though.
HOWEVER, I've been lucky enough to come across 2 of the jugs you're looking for at a country auction (...each one a 'few' months apart. I'm patient...): one 5 gal, one 3 gal. I made 'stoppers' out of collapsible measuring pitchers from a kitchen store that I carefully freed from the frame and then used a leather punch of the right size to make a hole for the bubbler. The most probable uses of these back in the day would have been as pickle jars. A pic of the 5 gal:
http://coldsun.com/shared/wide_mouth_carboy.jpg
If you go to eBay, search for a 'wide mouth carboy', or something of the sort, and there's no suitable match, you might want to choose the "save search" option, so that if anything is listed that matches what you're looking for, you'll be emailed about it. Never tried it though - you might get a lot of emails.
I've got 5 gal carboys, each a bit different, and 2, 2.5, and 3 gal carboys, each a bit different. Making fruit & vegetable wines is a little 'dirtier' than beer, so I never really know how much liquid I'm going to end up with sometimes. I'm on a never-ending mission to decrease head space.
Good luck bro