It likely will only drive the rear wheels when it detects slip in the front, but it will definitely weigh a bit more, and that will slow the car some.
Without the additional power of the 3.5L V6, there won't be enough benefit to offset the cost for me. It may be different for someone that gets large amounts of snow or rain.
Without the additional power of the 3.5L V6, there won't be enough benefit to offset the cost for me. It may be different for someone that gets large amounts of snow or rain.