I did custom efi on my later 2 liter. Just make a flange using the intake gasket as a pattern, weld up some tubes. I used CBR 600F4i throttles, it barks like a seal when you crack em.
For control I used Megasquirt from
www.megasquirt.info , ran a couple hundred to build myself or you can find them pre built on ebay. You can even add ignition control, I used Ford EDIS and ditched the dizzy.
I have switched back to a common plenum/ single throttle for the time being, till the ITB intake can be rediesigned. Lots of pitcures in my profile.