As Loren pointed out and I mentioned in my post, Pelican does have both the heated and non-heated O2 sensors.
The 1980 SC stock sensor is not heated.
The 1884 sensor is heated according to the picture and is substantially more $$$$. I believe it is around $180 or so.
The heated sensor will require a 12v power source which the SC did not have hooked up in stock configuration. My harness has the connection, maybe they were anticipating the change?
The only real advantage to the heated version I know of is that it will come up to temperature and start reading correctly much quicker, and will probably meter more accurately at idle. Uner throttle and load both should be capable of metering correctly assuming they are not old and contaminated. Even on old worn out O2 sensor can usually read, but it will react slowly and will not be as accurate.
COVER MY BUTT DISCLAIMER:
Modifying emmision control systems may violate state or federal laws and I am not suggesting anyone do that
