There really isn't much information out there for the adjustable bushes for our cars. I'll update on the durability and how well they stay after a while (might need a reminder). As for Superpro vs Powerflex, I chose Superpro because honestly, I've never heard of Powerflex until now. I probably would've went with powerflex since they advertise to be stiffer than stock... but then again, I just tried looking and it's pretty hard to find a Canadian/US pricing for the ones we need without having to call shops.
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