Here is what you want:
gear - ratio
1 -----3.777
2 -----2.117
3 -----1.360
4 -----0.971
5 -----0.755
final drive - 3.157
This is for a 02a CTN 5 speed transmission for the 1Z AHU engines. I didn't put it up because 5th gear is the most relevant to a 5th gear swap. You will also want to change the speed input field to see what engine rpm the engine will be at. Here is the link to the tire, wheel, gearing, and engine rpm calculator -
http://www.myturbodiesel.com/1000q/tirewheelCalc.htm