Torsion bars for better handling; your experience?

Nicely stated.

I'll just add that any time weight is transfered in corner its going to decrease the available traction.
Anyone interested in more should check out any one of the well regarded books on the subject such as Carrol Smith mentioned before, Fred Puhn's Handling, or Herb Adam's Chassis Engineering.
I used this picture of the MG because its an extreme example of taking the wieght off the inside front.
midget-lift-ripken_062605_1147-sized-jpg.jpg
It always hurts, even when its necessary.
The was a great article in Circle Track (Feb, 2009) where Herb Adams did just this sort of modification (including adding a sway bar and reducing compliance) with lap times on an asphalt track.

Then as Mattax said it's just a matter of maximizing your tire contact, which generally means the softest suspension you can get away with. That's relative
You can say that again! Definately not soft by typical standards especially more so when running R comps, slicks or A compounds.