Do I want to retain the stock brake line routing (front) or have two separate lines from the master cylinder?
Mine doesn't have two separate lines from the front master cylinder. It has one hose from the master cylinder to the right caliper then a metal pipe bridging from that caliper to the left caliper where the system is bled. It is described as from a
from 08/92 S-style setup in the parts fiche at MAX BMW. As far as advantages go, it
appears to be a less complex arrangement. It also doesn't seem worthy of obsession time to me. Both setups should stop the bike if they've been maintained.
The vendor should receive photos and measurements of all hoses and descriptions of their attachments to verify that the correct kit will be sent.
Filmcamera went through a minor drama with brake hose replacement that resolved itself nicely. Maybe he'll chime in.