Hi Horseydug,
Thanks for the clarification on the Right/left thing. Very easy to remember now.
I used the OEM Motocraft sensors which have anti-seize pre-applied.
Today, my brother and I will begin our journey to the RIGHTSIDE

O2 sensor. We had to laugh as yesterday we replaced the oil pan gasket - somewhat involved but we were on a roll and it went VERY WELL - really no problem.
FOILED by the darkhorse right side O2 sensor! LOL
Regards,
Jab