"Opentracker" said:The two holes give you two adjustment points and they are so close together, I don't think you could tell the change from the drivers seat. Now, switching one set of bushings out for a rod end would make a change by making the bar work harder.
They effectively change the length of the sway bar, there by making it have more control over body roll in one hole over the other.
If you want an adjustable sway bar, get one of the Stambar sway bars. The end of the sway bar doesn't have the hole in it for the end links and you slide the block along the length to change the effect of the sway bar. These are the type we use on our cars.