Needed: Mods on an O2 Sensor.
I am needing to drill a hole in the exhaust in order to install an O2 sensor form the MPI Conversion. I thought I could then weld a nut on the exhaust right after the exhaust manifold and screw the O2 sensor into it. Unfortunately, the thread is an unusual size metric that is not available in my local area. I'd be interested in any other suggestion for tapping an O2 sensor into the exhaust.