100 cfm more with anular and downleg boosters can't beat AFR

No.
At this point I've learned alot. Nor do I need to give your pals a grand, plus the time and money to rework the fuel and electric systems.
But the basic lesson here is that a wideband or any these blingy contraptions are not essential to find power and economy with a good basic carby.
All that's needed is a few jets and a way to measure performance, whether its a dyno or a track.
That would have required reading the first two posts.
The other ones showing some logger samples were by request.