What a load of crap. It took me 15 minutes to replace the o2 sensor in my 4.7v8 in the Land Cruiser, and I have more crap in the way and less room to work.
The part is available for less than $100. OEM Toyota is mfg. by Denso and the Denso part is the same exact thing:
http://www.densoproducts.com/
I'm a few days late so I hope he hasn't changed it already.