I have this set up.

Odi's lock on twist throttle kit comes with a "interchangeable" cantilever you can switch out to fit in your housing.  They sent me a twist throttle lock on kit but it did not work because I run the magura 1/4 twist and the kit didn't have a cam that fit my Magura housing nor did it have the same pitch.  They might have a set up for the motion pro turbo twist, you'll have to call them on that one.

Since they did not have a cam that fit my housing I went with a ATV single ply grip wired on because the MX single plys are shorter that the throttle tube and you come up short even though they have a full doughnut and the ATV's only have a 3/4 to accommodate a thumb throttle.

Good luck