got this coming to fit on the back of my transit, but was thinking, it might be a nice upgrade for other peoples projects, its just 4 bolts, as you can see, its very complete, this is the rear end from the new mustang, might be to wide for sierra, i believe the wheel faces are 65inches apart, PDC will be 114.3, i will be going coil over rather than the separate coil and shock, might even go air, the complete thing only cost me $400 (£310ish) Normally $500 but i got it on black friday+$200 shipping to me in america to put in my container coming to the uk, has lsd, and discs/calipers, even got the handbrake cable, and these axles are taking a lot of power and don't appear to be breaking, if anyone wants to take measurements or see if it will bolt up under a sierra it should be with me early January