You can search the archives here or go to the AMC forum site and search under suspension etc. John Elle (who used to be a lister here) posted a fix for the spring support bushings. He found a bushing which matches the original dimensions I believe.
I wish I had added a zerk fitting for grease before I installed it! It would be trivial -- just drill a hole in the middle of the tubular part and screw it in (pointing in some direction you could reach it once installed.)