I have a Ford 9" in my 94 Camaro with 4.56 gears - the car has quite the roar and am going to change the gears - I like the 4.56 for around town and approx. 2500 at 70 on interstate. Looking for a set that is quiet - might be on drag strip but seldom. Any suggestions? It's a locker rear end but not much I can do about that except change out center entirely I suppose. Not really a problem except at slow speeds or if lose traction on a side.