I am running Steedas on my 2001 GT, haven't been on for long but the engines seems to run smoother and rev a little better. Unsure on mpg (my odometer is off now due to my 4.10s). I only recommend Steeda UDPs on the 4.6L (2V or 3V)...
Don't skimp on pullies...get the Steeda's and be done with it. There is a reason why they cost more and they are worth every penny, in quality and performance...
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