I just install some 03 Z06 sway bars on my 98 today.I could not believe how much larger the Z06 is to the stock C5.I had thought i had upgraded when i replaced the rubber bushings to Polyurethane and changed the plastic sway bars ends to metal links.But i had just started until i purchase a set of Z06 sway bars online. WOW these babies are huge
.The front is 7mm thicker than the stock c5 and the rear is almost 4mm.
I have added a few pics to show the size difference.