That is cool and all, but since the Sonic and Trax are virtually identical vehicles (drivetrain, interior and exterior dimensions), I don't see a reason for doing this. If it was a diesel swap (from a UK sourced Aveo 1.3 tdi engine, for example), I understand. But the only difference is the latter having an optional AWD and sits a couple inches higher. Which is exactly what you had to do to fit the rear diff. Have you ever finished this project?