Oneton
more than likely the part number brewski gave you is the correct one but there are 2 different motors that can go in this truck.
Look on the motor tag and verify the motor number.
For motor number 926000 (motor group number 923445) , it takes the number brewski suggests, 0916233 and uses spring kit 0916232.

For motor number 6R8550 (motor group number 989718) the parts manual suggests 0395369 brush kit and 0916232 spring kit.