When I did my subframe bushings, I put in new hard lines because I mangled the old fittings trying to get them out nicely. Ended up just using heat and vice grips to break it free. Just went to NAPA and bought a pre-flared stretch of pipe with the right fittings on it and bent it to shape around a beer bottle. So much easier than trying to save the old ones.
Also the new fittings on the pre-flared hard line were super beefy compared to what was on the car. Should make things really easy if there's a next time.