[lightning bug]

IMO I feel they would be necessary, race or street. The weight transfer will be there regardless. But then again, what's different than having the torsion bars there or not. Something to be researched more. As far as toe adjustment,t hey wouldn't adjust your toe at all. Also, why would you want to adjust toe on the rear of the car? Adjusting the toe-in or -out is done on the front tires. Toe-in is safer and more stable, as toe-out will allow you to "turn in" quicker into the turns. A slight toe-out can be used on the street, but your car could possibly be less stable at higher speeds and will increase tire wear.