Those "pre-made" lines generally need a lot of tweaking, and some just don't fit at all. Using straight lines with flare nuts on both ends, a tube bender, and coupling nuts won't win any concours car shows, but they're probably the simplest, least expensive way to go.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!