I was never too impressed with the 4.0 V6 in my 05 4Runner 4x4. Seemed to down shift a lot and never really seemed that quick. Unless the HP has gone up a lot in 2010, I personally wouldn't want this motor in the heavier Tundra. At least go with the new 4.6L V8. My 2 cents
it actually does ok with the V6 my friend has one and he has towed quite a bit with it.. i cant say a bad thing about it just dont go walking in thinking its going to have the power of a v8 and you will be fine ..