The Quaife is the more streetable diff, but the OS Giken and Cusco are beasts at the track. They are less smooth in operation, I admit, but I do think the clutch ones are the best all rounders.
ONE QUESTION: What differential noises do you guys mean??? I just want an opinion because I'm getting a diff for the 370z and just want some input about any noise the diff will make.....
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