exracer28

Is there a difference in the arms? Some say yes because part number change and others have told the change is so minor not to worry about.

Anyone know for sure?

ghoffman

It depends on which one. The upper rears on a C6Z are considerably different.

davidfarmer

the fronts should be the same, or very similar. The rear uppers are different to compensate for the longer wheelbase, but I think the rear lowers should be the same-ish, as the wheelbase change was made in the subframe.

exracer28

Just wanted to know which ones fit. Sounds like upper rear C6Z is stand alone.

Does that imply others might/do interchange?

ghoffman

Well, I did a comparison of the rear upper C6 and C6Z and it appears that the only difference is the way it mounts and the associated bushings. The C6Z has the "dogbones" like the C5 and C6 front uppers.