[quote=moparacer]Shouldn't be any preload or pressure on an anti roll bar in a 4 link setup if it is right. If anything is breaking might be something else wrong.

Preload with the 4 link and set the anti roll to be zero preload at race weight with driver in car.

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Yes, this is how we sent mine up with me in the car, at race weight, with both bottles in the trunk and all my gear in my lap as my buddies adjust the heims until all bolts slip in and out of the holes so everything is with no preload. Car leaves hard, straight and level every time.