The joy of a simple unit like the TW is that modifycation is not so difficult. You can pretty much
do what your pocketbook and skill level would allow. Extended forks might be easy if you could source
longer tubes from a different unit same with narrower rim. Lowering the rear shouldn't be hard perhaps
even go rigid. Forward controls should be hard either. Careful on that first ride....it will handle different.
Might even get what you want with just different handlebars and forward controls. Again all depends
on how much you wish to spend.