Browsing while I rest from projects, I noticed Holly now makes a smaller 2bbl tbi with the new self learning ECU. It might be appropriate for the 3.0. I was also thinking, as I am spoiled with my 123-tune dizzy in my B, how do I get that in the Stag? Oh yea, a CB Black Box. I had one on my GT. Between them, we could then tune for modern gas and efficiency.
I also noted the CB Black Box ignition controller works on V*s, so that solved the mapping of the advance curve and ability to drive a low Z coil. If the stock curve is as screwed up for emissions as other cars of the era, it could make a sizable difference.