Depends.
If you get an ARB that is "air bag compatible" with the crush cans, they don't work. The crush cans flex too much and will rotate the bumper into your body. This is a bad time.
If you got the "non-airbag compatible" model, then it bolts straight to the frame. If anything bends, then you shouldn't have hit anything that hard.
If you ordered the air bag one, either take it back or plan on having plates welded in to effectively make the crush cans useless.
There you have it.
You're not referencing D2s, you're referring to earlier vehicles.