I swapped out my pumpkin today as I was having a problem accelerating around corners one tire was breaking loose . after stiffing up the car with the new suspension It was acting different with less body roll come too find out I had a open differential with no limited slip . I found out the hard way at the track when all the car did was spin through 3 gears with only one wheel spinning ,so I contacted the dealer too confirm the rear end gears and type bogus why bother putting that type in a sports car ? so in went a 07 used g35 rear for 300 bucks far more affordable than a new limited slip unit . What a difference too bad its raining today .