Adjustable Trailing Arm Mounts?

[chevychase]

I was thinking about some of my parts I have stored away. I got two brackets that I was told were adjustable trailing arm mounts. I don't have a pic, but here is an illustration of the side view. I guess you have 3 positions to raise/lower the trailing arm. What would be the benefits and has anybody ever heard of such a thing or have I been bamboozled?

[Hart_Rod]

It would allow you to change the pinion angle if you lower your truck. I would like to see some pictures of this.

[chevychase]

Wish I could get ya a pic. But here's a little closer pic of what I'm trying to describe. In your head tilt this pic toward you 90 degrees so the holes run top to bottom giving you 3 adjustable heights.



Hope this helps!