How many throttle bodies would you use, 3 or 6? A side draft carb has 6 barrels, one for each cylinder, even though the head only has 3 ports. If you only use 3 TB's, you will see quickly that one TB can't supply fuel/air to 2 cylinders very well. If you are thinking of gutting the Webers and converting them to EFI functioning, that might work and be interesting.
There would be 6 throttle bodies, one for each cylinder.
I would need 3 of these.
http://www.jenvey.co.uk/products2/twin-t...m-single-tbsxxiSo you can see that the work of "gutting a Weber" and converting them to EFI has already been done.