If anyone needs the info, this is the one I got - had to add a matching copper washer because this comes with a rubber one.
https://www.oreillyauto.com/detail/b...090167/4177507
I decided against leaving the existing O2 sensor in for a few reasons.
1. I didn't want a disconnected O2 sensor wire floating around inviting questions at inspection time or just looking messy.
2. I didn't want the sensor sitting there getting hot and possibly failing in case I ever decide to go back to stock. I screwed it back into the stock manifold for safe keeping.
3. I like things to be clean and smooth - extra sensors poking out could only make installation more difficult
