rear calipers included?
If they are, that's not that bad. But you don't need the rear calipers. Your stock calipers can be made to work
In that case, you would only need to buy the M2300-M kit which is $175 for the rear parts. Downside is you will need to pull your axles to do this.
It makes a difference, but i never wanted to pull my axles out so i only did the front kit