Kalipitt

So I installed a 12 bolt rear end and it feels like when the car squats that the torque arm is rubbing in the tunnel. Is that what it is and what do I do? Just beat in the tunnel for clearance?

JD_AMG

Aftermarket torque arm right?
If so some of them come with two sets of holes for the rear axle to mount to, you should probably be using use the inner set of holes (mounting the torque arm even closer to the actual axle) if you can. They make them this way for this very reason.

BMR Sales2

iTrader: (40)

Like JD_AMG said if your torque arm has two sets of holes and you aren't using the inner most holes make sure you do that even if it means cutting the torque arm mounting bracket a little. Also if your car is lowered make sure you have an adjustable panhard rod because it will allow you to center up the rear end the car giving you more clearance.