The T900 and W900 I understand there the same kit. One is left had drive the other is rite had drive( steering wheel location). T900 comes with extra parts for the left hand drive(US trucks).
The bull bar Think you would have to triad out the the front cross member or radiator support. Don't think it would be all that hard.
The steering axial need care there kinda week compared too the Revell 359,I've broken a few.Some of the pluming is some what a pain to work with. I would get one.