What about 3 side draft injectors?
IIRC ther's a fellah converted SU carbs to throttle body injectors over on the Megasquirt site.
Not sure why you couldn't do that with some of the small TBI units from the '80s domestic econo boxes (I'm sure there's a reason, I just don't know what it is, certainly not because it would screw up the float adjustment
).
That and a Megasquirt controller (not sure how you'd wire it with 3 injectors as I haven't looked at that).
Of course if you are dead set on carb-o-tation, the SUs in original form are supposed to work well, rumor has it #4's or #6's are the setup to have (I call it rumor because I haven't been able to see one set up in real life and ask the person that set them up).
