From the online factory manual posted at the top of this forum:

http://misc.mmdsi.net/tacoma/tacoma-manual/Repair_Manual/03tacoma/ig2rzfe3/ignsy/ovi.pdf
Second page, about 1/2 way down.

The gap is listed in your owner's manual...I would use that gap before the 2003 FSM linked above. Just as cross check, do you have the plugs that were taken out, for a reference?

A bit nitpicky, but those measurements in inches are .031, .043, and .054


Wheeling a Stepside Tacoma on 37s
Exploring in a T4R Ltd V8