yeah, they're some kinda dowdraft setup from a 900cc bike, I talked to the source of the mystery carbs a bit ago and he confirmed it, I'm actually using the coils off the same bike they were on originally, image.

..not an easy thing to adapt? They sure cleaned up nice (read that as "carb cleaner is also a good spider killer") I'll get pics as soon as the stuff evaporates and I can get 'em inside where there's decent lighting for photos.

I don't know, I might put 'em up for sale, or find a way to use them, or trade 'em to someone local that has a decent set of carbs that fit a cb750. Methinks my set of carbs has seen too many all thumbs shadetree types.