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These should work well! Been using the 70 durometer, 1.5" poly's, and while it's calmed down, I'd prefer quieter. These are rubber leaf spring bushings for a GM, part # HB-902. Feels rather firm, but I'm sure they are a little softer than the poly, plus I think rubber has better damping characteristics. Probably need to be cut slightly, and I doubt the sleeve will fit ... hope that's not an issue. Will install soon.