my hanes manual says the same thing.According to the specs posted at this Tacoma site:
http://www.geocities.com/ritacomas/mainpage.htm
... the firing order is 1 - 3 - 4 - 2 for both the 2RZ and 3RZ engines.
I'm unable to locate confirmation (yet) in my FSM.
It still doesnt say for what year tacoma.my hanes manual says the same thing.