You are basing your fix on "unreliable information". Sorry. The diff should be "centred". I challenge anyone to show me proof that this "offset diff theory" has merit. The Nissan Factory workshop manual shows no evidence of this being true.

I know you like the height of the car, but it should purposely be at that height, it shouldn't be a by-product of worn out springs. Go to a suspension place and get them to sort your springs out.

Take it to a suspension place before you chew up a tyre or 2.

An incorrectly installed panhard rod (aftermarket one) can pull the diff to one side during suspension travel, but not the springs on their own.


ps. Is it possible that the car has hit a cement/stone gutter at some point before you bought it? Bending the rear springs and spring mounts?