You are right, I have a 3" lift. Until last week I was running 285/70/17 Cooper STT's on my truck and just upgraded to the 285/75/17's. I will have to do some trimming for the new tires, but so far they (and the truck) are performing well.
TacomaJack, the 2.7 has handled everything that I have thrown at it. I live in Northern BC in an extremely isolated village. I live almost 800km from a major centre, 600km of which are logging roads. I live in the Rocky Mountain Trench, so the terrain is varied, lots of hills and grades and the road is twisty. Spring and fall are extremely wet and muddy and the winter brings lots of snow. I have had the truck at near maximum capacity and it hasn't skipped a beat. I regularly tow with it as well. I have not re-geared and the only time I felt like I wish I had was when I was stopped on an incline and then had to continue driving. At that time I was loaded down with my trailer, skidoo and canopy full of stuff. That trip I drove from Vancouver to the village, about 1600km without incident. I'm able to pass on the highway and although I have to be smarter about my gear changes, there was never a time I had to have more power. Two summers ago I made a roadtrip from Vancouver up past the arctic circle on the Dempster highway. I drove about 9000km and averaged 11.2L/100km. I had a canopy, sleeping platform, all my gear, two spares, 50L of extra fuel and 25L of water. To me, that's pretty decent mileage and that's with the lift and 33's.
Hope that helps. To me, the 2.7L is a fantastic engine and the Tacoma a great truck.