You will probably need to save the plastic arch and roll the arch.
The correct ET for the Cab is between 35 and 40. Any more or less than that you will either hitting the springs or rubbing on the outside. (7" wide rim). Also use strong bump stops as the lowest you go the easier the shocks will bottom and springs coils will bind.
Mine the first day I got it. It was rubbing like crazy front and back. The car was just impossible to drive.

I am now running 16s with 195/45/16 on Toyos. Coilovers are raised to be able to drive the car. Everything is stock under the arches, doesn't rub at all even when I am 3 wheeling it.