Section 534 (Suspension System (Service Information)): Rear: Spring: Description
WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
The coil springs mount up in the wheelhouse which is part of the unitized body bracket. A rubber doughnut isolator is located between the top and bottom of the spring. The isolators provide road noise isolation