Not really. I added the Currie lowers over 10 years ago and added the Metalcloak uppers about 2 years ago, all in the front. Now I swapped in the Metalcloak lowers. So it has been gradual change. Adding the Curries to the rear with Metalcloak uppers didn't change how the rear felt. More than anything I'm happy to have not changed how it feels to drive after all the arm changes and addition of the coil spacers.