The driveshaft will definately clear up any shaking that comes around after gear intsall. Mine was shaking horribly around 70. I put in the Aluminum DS and it was cured. This is the only advantage of the aluminum driveshaft. Well, besides it weighs a few pounds less.
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90 GT 150k on the motor never had the valve covers off, 1 5/8" headers, x-pipe, 2chamber flowmaster,fms aluminum ds, 3.55, best time on 245/45/17 2.08 60', 13.906 @ 98.98
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