Hello. I am tackling some suspension refresh stuff on my 90' C4. I am throwing on some B6/HR springs. I have a low mileage set of B6's/HR springs which I am using for the fronts, and new B6/HR springs for the rears. I notice there are no bump stops or bellows on both the used set I have, AND none on the factory Boge/Springs still on my car. I do see bellows/bumps listed in the PET schematic. Should I buy new bumps and bellows all four corners or leave out? Also, I purchased the Rennline rear top hats/strut bearings for these new B6's. However, the HR springs appear to need a upper spring seat adapter to work--I see the Elephant Racing ones for stock shocks which I believe would work. Has anyone here done this set up? Rennline didn't seem to be of help when I reached out.
My thinking is buying ER upper spring seat kit and install below these upper top mounts.
Thanks for any advice in advance.