Is it 2WD, 4WD or a Prerunner first off.
If it's 2WD stock don't even bother lifting it.
If it's a 4WD or Prerunner look at getting a spacer lift. It's cheap and with a 2 inch spacer lift you should be able to run 33's.
http://www.toyteclifts.com/index.php
http://www.suspensionconnection.com/...con/52907.html
Is it the Prerunner Model?
If it's not then you're going to spend a TON of money. Because you'll have to convert it to a 4WD style suspension. Which the 2WD does not have. It has a suspension for street tires.
It's possible, but completely not worth it.
You could sell your Truck buy a Prerunner or 4WD lift it and still have money left over than if you were to try and lift a 2WD.
www.toyteclifts.com