Cut the line off near the fittings. Grind or drill away the line until you can poke the stub of line out of the fitting. Use those fittings, after cleaning, on the new line, making your own double flares. A decent double flare kit usable for anything but stainless line costs maybe 45 bucks. You'll then be able to make lines to any exact length you need anytime you like, instead of relying on unions and whatever length the local parts store has in stock.
It'll easily pay for itself, as your CJ5 will likely need fuel as well as brake lines over time.
97 TJ Sport - 4.0/HP D30 w ARB/8.8 w LS/4.88s; 35s and flat fenders on 2.5 lift
84 CJ7; frame off restoration in progress.
The technical advice you get from me here is worth exactly what you paid me for it. Warranty issues will be reimbursed at double what you paid me for the advice.