So he has the old hose and just needs a new one the same shape? If I were in that situation, I'd take it to a real parts house (in general not a place like AutoZone or O'Reilly's) and see if there's a sharp guy who's been working there forever who'll match it, or get close enough to get you something that installs and works.
Zero Gravitas — 2017 Flying Cloud 26U | Il Progetto — 1976 Argosy 28 Center Bath | WBCCI# 15566
He has all of the virtues I dislike and none of the vices I admire. — Sir Winston Churchill