Don't be stupid friend... Would companies such as Cobb, Perrin, and others put a WBO2 hung in the bellmouth if it was a terrible idea to do so?
Further more, this is copied directly from the AEM instructions.
A weld-in M18 X 1.5 boss is supplied for sensor installation. Mount the O2 sensor in the exhaust system at least 18 inches downstream from the exhaust port. If you anticipate high EGT's (over 800C), run a turbocharger, run at high RPM for extended periods of time or plan on running leaded race fuel then you must mount the sensor at least 36 inches or more downstream of the exhaust port
Show me where it says 36" from the turbo.
Reading comprehension owns you.