I think the front CalTrac segment provides very little flex, that's left to the rear segment. The front segment acts like the top bar in a 4-link or ladder bar ... very rigid.

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I'd leave the longer hangers in there


CalTracs come with new hangers. Unless you were specific, the shorter front segments would come with standard front hangers and as a result the rear end would have to move forward to line up with the locator pin. Life would be simpler if you ordered the kit specific for the car.