S60, 12 bolt, 9 inch, which uses less power
#4
12 bolt uses less power, but if you are choosing any of those rear ends, you shouldn't feel too much power loss.
Here is an article from Car Craft comparing each of these rear ends and power losses:
http://www.carcraft.com/techarticles...wap/index.html
Here is an article from Car Craft comparing each of these rear ends and power losses:
http://www.carcraft.com/techarticles...wap/index.html
#5