It's done all the time. I don't think the bungs cost more than a couple $$.

The O2 sensor on gasoline engines has an 18mm x 1.5 thread same as a spark plug. People have used spark plug "de-foulers" with the externally threaded part cut off.

What my car runs or doesn't run is off the subject. The OP is having problems which sound so familiar, there must be 1000 different posts about this issue. The ironic thing is, most street cars that can run 10s have a 3000+ stall speed torque converter. This means that the engine never sees the condition plaguing the half of 750 Edelbrocks that have the stumble, except maybe on the drive back to the pits.

When I wanted a big Edelbrock I took AndyF's advice and bought an 800.

R.