I'm supprised that I did not see a thread about this here, as I know that I was not the only one awaiting the drop of this product. Only downside that I can see in the pictures is that it only comes with blue numbers. Maybe they can release a green or amber version.
http://prosportgauges.com/wideband-air-fuel-ratio-kit.aspx
http://prosportgauges.com/wideband-air-fuel-ratio-kit.aspx
Wideband Air Fuel Ratio Gauge
52mm (2 1/16")
(Pre- order price -shipping on/before 12/5/08)
Utilizing the latest Bosch wideband O2 sensor -5 wire heated 4.9 (Prosport Inc. is the only one licensed in the USA to use them) our gauge now has the widest range 10.0:1 to 20.0:1 AFR readings on the planet.
Featuring Blue LCD readout in the center of the gauge and a bar-graph syle LED's around the outside of the gauge that change from green(Lean) to Yellow(Optimal) to Red(Rich) for immediate reference to AFR.
This is a complete kit that includes everything you need:
AFR digital Gauge
Bosch 4.9 5 wire heated O2 sensor
Weld in Bung
Instructions
Wiring harness(Gauge to O2 sensor) Plug and play
Decals
Visor/hood