Joe. I have searched for split throttle shafts and there is a little bit of info on the web. So it must have been done by some people. But using one barrel of two is no different than two of four. At least in my mind. Is that what you were thinking?

Bill Schickling

40 Chevy Pickup
60 Austin Healey
http://home.roadrunner.com/~schickling/1940Chevy/