It is possible to run from zero to 3 degrees rear toe in on each side if use the original MO3 rear uprights and a combination of the plastic rear suspension mount and the Hop up part which incorporates 1 degree of toe in.
I think that is a wide rear tuning option. Most are either using the kit 1.5 or two degree rear toe. Plus the toe in would be different as one is in close to the chassis and the other out on the hub.
Just an observation. Then there is the tuning option with the rear shock tower.