the hybrid honduhs have wideband o2 sensors. but you still have the problem of the stock ecu not knowing what the hell is going on when the o2 sensor reports voltage outside of the hyundai-programmed range. like onpol said, it's best to use the one at your dyno shop.

 

Honda has a Accord with 4 cats that uses a wide band o2 sensor. They also have a Civic model that is very similar, that uses the same wide band o2 sensor.

They still run about $150 used, and have a 25,000 mile life (Per Honda). So if you don't know the mileage of the vehicle they come out of, or when it was last replaced, you could be buying a worthless sensor. I have also not heard of these specific vehicles being sold outside of California. So finding one in the midwest, or in the east/south might be hard.