Lots of posts not answering your question. I do not own a tundra or a 5ver. But I have seen many on the road, and in the cg. So it is doable, just watch your weight, like you should with any setup.
You can call Toyota directly (not the dealership) with your Vin number and discuss it with them. When I bought my htt, I did this and found it very helpful and interesting.