98 Limited with 253k on original transmission, lifted and 33''s for 20k miles, never missed a beat since I've owned it, year and a half daily driven and weekend wheeled. Just bought a 99 with 264k for $800 and the original transmission, but its flex plate broke at 264k is why the previous owner sold it. I will probably just swap the transmission since I'm unsure of its condition. My 2002 4runner has 203k now, I bought it with 150k, original transmission and daily driven, previous two other 3rd gens I had also had over 200k and never had any issues with those transmissions except my first 98 4runners transmission cooler line broke at the radiator, and I immediately fixed it, no issues. Other 99 highlander I had, had 230k, I bought it with 170k, never any issues. Worst case if one does go on me, it's $900 transmission and labor locally with a 13 month warranty.