I was replacing the rear drum brakes on my 01 Cherokee this weekend. Drums, shoes, wheel cylinders, lines and all. The whole rear end, leaf springs and all is pretty rusty and crusty. The leaf springs have some thin bands around then with rubber strips instead of the thicker clamps I've seen. They were rusted out and fell off. Would these have been factory or something a previous owner would have put on there? I'll need to replace them so that's why I ask. It is a 4 x 4 with the Chrysler 8.25 rear end.