https://www.oreillyauto.com/detail/c/bosch-direct-fit/bosch-direct-fit-oxygen-sensor/b02d/17212

If that is an significantly improved design wide band Oxygen Sensor
does anyone sell an add on meter to connect to it
so that it can be used “stand alone” extra gauge below the dash board gauges
and not as a part of an EFI kit?

$65 seems very reasonable.