Missed some of this thread but....
1. Firmer bushings change the ride quality...in some case it's clearly a more harsh ride but it depends. For something like the subframe bushing inserts, I can see how one would like the new ride better, even if it's not "cushier."
2. Firmer bushings will highlight deficiencies in your dampers.
3. Poly bushings work well in some locations, but not all. If there's more than 1 axis of rotation, it's not a great idea to use poly.
- Andrew
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