Maybe I'll give it a try then. Hopefully the sensor I have is still in good shape.

The Spartan 2 looks promising. I can wire it to the EGR pin when data logging, and a gauge when not. I was looking at the PLX system also. Thanks for the recommendations.

Bump. Still looking. Any wideband gauge with 0-5v output for data logging would work too. Just want to get back in to tuning this 383.

I want to replace the gauge that was stolen earlier this year so I can dial in the tune with 61 lb injectors. I still have the 02 sensor, but the gauge and wiring were ripped out with the ECM.