Any recomondations as to which driveshaft to go with that WONT VIBRATE? I had to try 3 on my 2011 GT last year before i just put the stock one back on....is their a built in vibration in the new Auto 5.0...I have now owned 2 Auto 5.0's one 11 and one 12 and both have had a slight 3-5% vibration that can be seen in the passenger side headrest at certain speeds.....not sure if anyone else has this same small vibration but my new auto is 100% stock.....im figuring going to a 1 piece will make it worse....anyone else notice this vibration in their auto 11/12 GT? did it get worse going to aluminum driveshaft?
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