I have a brand new Greddy wideband gauge for sale.
It is the exact one pictured here---
http://www.prostreetonline.com/buy/Greddy_Air_Fuel_Gauges/16000811/

It is brand new. Box has been opened, but nothing has been installed. The sensor is still in its original packing.
$250 shipped.

Also have a Autometer narrowband sensor for sale. Used, but in good condition. It's the Pro-Comp style with the silver face.
$25 shipped.

I have vouches on Neons.org and Stratusphere.us (same screen name). Local pickup available. If you would like pics, send me your email address.

 

are you sure this is a wideband gauge?

 

It comes with a gauge, sensor, and controller.(and a separate o2 bung)
I don't know any narrowband that has a separate controller.
Most just read the signal from the existing stock sensor.

 

do you have any actual pictures of this stuff?

 

all thhe greddy warning series gauges come with a seperate controller box. how many wires go to the 02 sensor?

 

Send me your email address and I'll send you pictures.

It has four wires going to the sensor.