67 charger Rear end?

Hello everyone,

So it has been awhile since I posted in this thread but, I just want to double check some things. I know I have to move the spring perches in and from what I have read, 1/2 inch in on both sides. Is this true? Also making sure that I have a 3 degree up.

Now some things I would like to know is where is a good place to get a rebuild kit for the rear end? Also want to different gears in and suregrip. Anyone have any suggestions for these things?

The best place: DoctorDiff Drivetrain Components