Destination129

I noticed that my '02 WRX wagon seemed to be leaning slightly to the left. After checking tire pressure, I made some measurements and found that the driver's side at the rear is almost 0.75 inches higher than the passenger side. I didn't measure the front, but it doesn't seem to be leaning as noticably.

Is the stock suspension (rear) adjustable, or is this just something that I'm stuck with (or could something be bent...)? I dodn't really have any plans on upgrading the suspension either (too much money).

Thanks for the help,
D.