The Kafer cup brace also reduces body flex, sort of like the front strut braces on a super.
It will make everything tighter around the corners, but you will still have the problem of body roll without a swaybar.
On the volksworld webpage there are some videos of this silver superbeetle, and if its the one I think it is, he's running a seriously beefed up suspension, Heigo front stressbar, crazy heigo cage, and a heigo kafer cup style brace.
This guy is drifting around this circular track, his tires are spinning and his car is FLAT FLAT FLAT. Amazing.
http://www.volksworld.com/content/down/down01.html
the videos are Kreis Kuke & Kreis Kuke 2. ENJOY!