Hi oldschool6, and welcome to the forum!
Here is what I can tell you. I have transplanted both TTR225 and XT225 engines into TW200's and have successfully utilized the TW200 carbs in both instances using the TW intake manifold and airbox boots.
I know that the TTR225 carb has larger input and output port diameters than the TW and is physically much larger than the TW's carb, so I am sure that a TW carb would fit into the area available on the TTR. I also know that a TW intake manifold will bolt right up to a TTR225 and an XT225 cylinder head. Where I believe you will have problems is mating the TTR airbox to the TW carb, both in terms of diameters and the distance/orientation between the TTR airbox and the TW carb.
I hope this helps, and good luck!
p.s. The below pictures illustrate a TTR225 carb/airbox boot/intake manifold (on the left) and a 2001+ TW200 carb/airbox boot/intake manifold (on the right).