Bulk, I've got the one piece Powerflex urethane bushings installed and have nothing bad to say. Some will complain the they give a "harsher" ride in the front. I didn't notice any difference. The 4.8 rides so rough as it is and then add low profile 20" tires.......well, you get the point. The urethane bushings should last you twice the miles over stock. I say go for it.

__________________
2006 4.8iS Black/Black with custom Audison Voce/Image Dynamics sound
Production Date - 10/05