My first-generation (1st year) Tundra has been trouble-free with the exception of the starter, which was replaced at ~117,000 miles. I have replaced the timing belt and water pump, as preventative maintenance, and will soon be replacing my headlight housings, as they have clouded up over these 22 years. Fuel mileage is rather poor, ~11 mpg around town. But the truck is very powerful, has extremely good ride and handling, and is very quiet inside.
I've owned Suburban, Yukon, Explorer, Lariat and Land Cruiser 4x4's, and my Tundra has been the best of all of them, by far, particularly in quality and workmanship, with the GMC's having been the most expensive to maintain and the most troublesome; the Explorer having no trouble in the three years I owned it.
I plan on keeping my 2000 Tundra. While it isn't what I would call "pretty", it has grown on me and at least isn't F'ugly like the new ones. Also it seems the perfect size, which is a bit smaller than the new ones.
Can you offer what application you are using?
Thanks Pal!