Hi Bobby,

The 7 series diffs are very big, I should have a measure before you buy it.

The driveshafts and brakes are also pretty big and the hubs are attached to the trailing arms (like the 3 series) - this means that you'll probably need to make new hub carrirers up to fit a similar upright to the sierra one.

Let us know how you get on.

Cheers

Chris