I've been toying with it. I've had a triple weber manifold fabricated for my OZ 2v head. There's not a lot of room between the manifold and the shock tower. Redline Weber and TWM induction produce Weber like throttle bodies with injector bosses. TWM also produces throttle plates that might help with the spacing if you put the bosses on the manifold, however I think they have a downdraft base ( I need to verify). Cost close to $300 each. You will also need computer (est $1k), if you want computer to controll ignition you'll need to convert to magnetic pickup. Then you have to fab fuel return line, electric fuel pump, lots of other stuff. My guess is total cost $2.5-3 thousand. It's going to take a while.
Mike