sway Bar

[RPOZ11]

I'm going to suggest what I see when GM does this.
Most, if not all, rear sway bars are smaller in diameter than the front sway bar..
In an El Camino I used to have, I ran an old HO brand large diameter rear sway bar and it made the car way to tight in cornering.
I'll assume that we dont want excessive anti roll, if this is what it is called, causing a reverse result.
I'm no expert but when i reinstalled the factory GM smaller rear sway bar, the el camino handled WAY better.
I left it that way and enjoyed years of driving that truck (car- A body).