Why do i see some sites advertising 6 line kits? Do e39s have 2 extra hoses at the rear sub-frame like an e30? I want to make sure i change all the rubber in the system.

Queens NY
BMWCCA# 186796
86 325es (wrecked by careless driver)
87 325 300k (project for life)
00 540is 6spd 180k (daily driver)