Pinion Snubber ?

Mine rarely hits. It will pound the brace if you have people in the back seat.

That's the nice thing about an adjustable. You can back it off when not required.

Mine is backed down all the way and it is about maybe 3/4" from the floor.
I guess the reason it is that close is I lowered the back 1" with the front spring hangers.

Guess I will have to try it and see if it is worth it or not.