I ordered the rear 1le bar and hardware from gmpartsdirect. Sent me the wrong bushings.
**** EDIT
Looked though my emails. I asked GMpartsdirect to itemize the "1LE" package because I was interested in only some of the components (front springs, rear bar and bushings/linkage).
Mark at GMparts emailed me the wrong partnumbers.
I ended up with stock springs and a 19mm bushing that wont fit my 21mm bar.
Might be advisable to check actual PN before placing an order.