My Sequoia just hit 147k. i ran into trouble last year with this vehicle, started getting shift control solenoid and pressure control solenoid Check engine lights, tried swapping out the valve body, but the CELs didn't go away. ended up replacing the whole transmission at 133k, it was toast. Then at 135k, i somehow cracked one of the heads, and the cost to repair was nearly the cost of a new "used" motor. S/C was installed by the previous owner @ 45k miles(in 2010) so it lasted 8 years and 90k miles supercharged, and it was driven, hard at times.
wish i had better news, but after the motor was swapped, the last 12k miles have been perfect. will it last? time will tell. will i baby it, no effing way!
attachment was that fateful day when white smoke was pouring out of the exhaust and i thought she was done forever... but nothing a LOT of money can't fix!