My parts came in today and I just finished putting them on. Couldn't have been easier. Nice improvement. The studs took a 13MM wrench to put them on, 1/2 was too tight. The packages that the struts came in had a different part number than the ones ordered. So. the numbers had been superceded. The passenger side strut was 04589606AA and driver's side was 04589607AA. The studs part number had not changed.