Just some info in case anyone is looking into rebuilding Bilstein 7100’s. I just got finished revalving and changing fluid in mine. Not an actual rebuild since I reused the seals. Here is a YouTube video I found and a link to a rebuild manual I found online and used as a reference myself. Link has some good information about their standard valve stack options and technical stuff like fluid levels, floating piston depth and torque specs.
https://www.yumpu.com/en/document/read/26267949/7100-series-rebuild-guide-bilstein
https://www.yumpu.com/en/document/read/26267949/7100-series-rebuild-guide-bilstein