Wideband UEGO Air/Fuel Sensor

Same thing I always say.
Tune for best performance.
In other words don't worry about the AFR number, much less aim for any AFR number.
Use the AFR to see the effect of changes to carb restrictions under various conditions.
How to read carb calibration chart?

A wideband is not needed
Setup for 750DP on this 408
If you have limited funds, they might be better spent at the drag strip or on a dyno since those actually measure performance. That was my point here.
100 cfm more with anular and downleg boosters can't beat AFR

To track the AFR relationships under various low throttle and part throttle situations, MAP and TPS are useful in addition to RPM.
AFR gauge with o2 sensor worth it or not?