Not much, but your gearing w/ sas is 4.70 its not really freeway gearing. This means the faster you go the more it winds up, higher RPM Sooner, 70mph instead of 75 or 77 at same rpm with 4.46 . I would have to drive them both and see. I'm always doing 80+ shhhh. ?What issues can u have highway driving with Squatch
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