Hi
The TOT is part of the solenoid block. The solenoid block has all the shift solenoids and motors built into one unit. Which is within the Transmission pan. Held on by about 10 bolts.
One other thing. Is to update the MLPS(Manual lever position sensor) some will call it a park/nuetral switch. The Pre-'95s have a tan sensor, which has to be updated to later design black sensor. Many weird problems from the tan sensor. This hooks to the gear select linkage on the side of the transmission. It takes a little wiring knowledge to update this.
Remember, These are quesses based without monitoring computer data.