For you guys how have done diffs..
 

How do you torque the ring gear bolts to spec? I used a impact to get the them most of the way, but when I try to use a torque wrench the diff just wants to spin.

Any tips would be a appreciated.

clamp it in a vice, but i never tq mine, just used the impact. heck i dont even put locktite on them.

just be careful with the impact.