Got Phone book?
Find your local AeroQuip delaer under:
"Hose assemblies-Hydraulic"
Stop in with the old line, drop it on the counter and say "I'd like a new line like this but XX Inches longer" Guy goes in back, comes out 10 min later with nre line and says:
"Here you go...25.99"
Pay the man, smile, and leave.
All fittings are standard Metric, and hose is standard Godyear Brake line. Fittings are roughly 2-5 bucks each, hose is like 2 bucks a foot.