**Twin Turbo 67 Dart Project**

Mad Dart said

The difference I see between the Competition Engineering and the Ebay one is the Comp one uses a Chromoly Torsion bar instead of Mild Steel. I am sure the Chromoly one would work better though it cost more $$. Reason is Chromoly has better Memory Characteristic's than Mild Steel.

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Yep, I know. My bro-inlaw is a metalurgist. I just installed a Comp Eng. anti-rollbar in a S10 and the difference is night and day. Shaved a tenth off his sixty foot time as well!
He had a cheap street 4 link like the ones in the trucks that are bagged. His truck would move to the side bad and rub the inside of the bedsides at launch. The cheapy panhard didn't work well at all. The anti-rollbar stopped that too!