Ok dont worry about the complience plate it could have been changed, have a look on the gearbox at the identification plate. It should say KO on it for a 4.2L V8
Also the trimatics are a "Left hand control" so on the left side of the gbox there will be the shift levers attaching the floor change mech.
Also the V8 traumatic has a converter housing cover thatgoes from the back of the engine the full lenght of the bell housing.
The modulator pipe & oil filler pipe are on the right hand side (drivers side) of the gbox
I dont know much about the T350 but hopefully the traumatic info may help identify it.
cheers
Scott