Are you talking about the flexible line that connects the caliper ro the hard line? If so then YEA, many, many of us use them. They are worth upgrading IMO, they give a slightly (barely noticable) stiffer pedal feel, but more importantly they are a lot more tough than the OE flexible lines that come on our jeeps. And they last longer.
For shopping, I would call up David @ Northridge, tell him what you have and what you want and he will hook you up.
For shopping, I would call up David @ Northridge, tell him what you have and what you want and he will hook you up.