I just had a Ready Lift 2.4" front leveling kit installed. Truck sits almost perfectly level now. Rear end is just slightly higher.
http://www.tundratalk.net/forums/tundra-suspension-talk/120754-ready-lift-2-4-level-installed.html
http://www.tundratalk.net/forums/tundra-suspension-talk/120754-ready-lift-2-4-level-installed.html