Yes, rear alignment checked out square after the install.
As You probably know super stock springs are different on the left and right, an extra spring on the drive side. When I installed them a couple people warned me on cornering and sometimes have issues on daily drivers, that's why I blame them for the feel.
The freeway curves right and the stronger spring is on the right. Going over humps, it makes sense that it wouldn't feel right.
The HD springs are left and right, but have the same count of leafs. Both slightly biased to the center of the car.
