Where to mount wideband O2 sensor.

Tried not to reopen an old post. Well not that old.

I just installed new Dougs ceramic coated headers and do not want to cut the coating I spent hours protecting during install. So if I weld the bung in the collector adapter after the 3 bolt flange... what happened when I want to go open header? Ideally a 1” thick collector spacer Drilled for the wide band would work - unbolt the exhaust and rebolt the adapter but 1) does anyone make one and 2) would the O2 even do anything with it open header mounted that close to the edge of the open collector?

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