Jan, going back a decade or so, Hall Pantera offered an air-operated clearance-maker that mounted small air cylinders on the front a-arms powered by an on-board 12v compressor. They lifted the low running front air dams of GT-5 & GT5-S cars some 4" without markedly altering handling. Only problem was, you usually had to turn the compressor on ahead of the intended use due to air leaking out of the holding tank or thru the poly lines. So there was often a couple of minutes delay if you didn't plan ahead.
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