Autotune O2 sensor placement?

Bee21

New member
Looking at installing the Autotune kit on my bike. Had planned on mounting the O2-sensor beside the original O2 sensor, right before the cat, but I've realised that is a _very_ tight fit. Seriously considering placing it further up-stream, on one of the individual exhaust pipes. How have you placed yours? Any pictures?
 
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