Ur NHC will become more stiff and stable during cournering. 
The concept of a strut bar is intended on reducing the flex between the front strut towers during hard cornering loads. By reducing this flex, it allows suspension points to remain undisturbed, allowing for the suspension to do it's job properly. This often gives the drive a feeling of increased stability and improved turning response and the advantage of anti-roll bar is very clear - it suppresses body roll on bump or during cornering, but does not deteriorate ride comfort in straight line.

Btw, all how much? Ultra Racing?