[dmsinnott]

Hi Richard, I believe it is the Ridewell, I think the ZF came out a little after our 03 went through production. 

However, I would like to provide a known correct answer. Is there an easy way that I can pass to the shop to tell the difference? I'm looking through the order sheet I received from Newell and it does not specify, the only references to suspension are:

Parallelogram Drive Axle Suspension with Anti-Roll Bar and Disc Brakes
Independent Tag Axle Suspension with Disc Brakes

Thanks Richard!