The best tip I can offer is to start with disconnecting the rear brake line/fitting from the proportion valve. Cut line to recover that fitting that came off to slide over the rear brake line coming from the ABS unit leading to rear brakes. Carefully measure,and bend line from rear brakes that will end up at the same proportion block port when finished. When satisfied with the relative proximity. Cut line,slide old fitting on,and apply a bubble flare using appropriate tool. Align with prop valve port,and attach. Now,a significant part is done along with potential areas of confusion are gone.... All that remains are the front brakes. I used a Hurst Roll-Control to tee the front brakes together since that line-loc has multiple outlet ports.
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