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    Driveshaft + Half Axle Spec S vs R

    I am currently in the process of swapping a RB25 into my Spec S. Since im going to run aprox 400bhp I was wondering if the Spec S half axles are equal to the Spec R and can handle the power? I've been trying to find some information about if these are the same or not. Same with the driveshaft...