Here is a nice list of fork tubes by size:
» Motorcycle fork tube diameter list Organ Donor
The TW has 33 mm tubes and there are few dirt bikes that use that size.
The TW triple clamps could be bored to fit 34 mm which opens up a few mx possibilities but if the triple clamps can be bored to 35 mm that would really offer a lot of possible choices.
I don't know how much the clamps can be opened up but a good machine shop (or 3) could give their opinion.