I was the front end wreck that made it hard,,,the radiTOR got pushed back a little...the guy that came to help me said he has done over 50 impalas and said he never had an issue with the lines ..we chiseled of the nozel of the line and got the new one in fine.
But that was a great article a little blurb about how the lines are slide in with a retaining ring and don't actually "screw" off would improve that article tho.