Its dealer only, I bought a new fuel pipe not that longer ago from the dealers. Are you 100% sure they don't do it?
The pressure depends on if its K-Jet or Digi, Digi's run a much lower pressure so you can get away with generic fuel line and clamp it on to the existing pipe starts/ends. K-Jet on the other hand, fat chance, the pressure will blow it off, unless you can make a really solid connection.