I´m guessing a 4-gear casing and shock tower moved to the rear. Like RB6 and 22.
Think we can expect a complete kit later this year.
With new chassis and gearbox, it´s almost a brand new car.
I´m glad that Lee get´s some new parts to play with at worlds and other races this year. I´m sure it will give him some extra energy as well.
Of course, the rest of us will also get some new energy and the chance to spend some money...