Line wrenchs from Harbor Freight?I think vice grips are better.Buy a real line wrench.SnapOn.It will las a life time and pay for itself.When the lines are rust and stuck I have a set of side cutters.Cut the end off and use a 6 point socket.Same with the whl cyl bolts.Use a 6 point.If they snap just get new bolts and use anti sieze.Same with the hard lines.I also have SnapOn bleeder wernchs.They will turn the bleeders 99% pf the time without snapping.Yeha they are pricey but they work.I had to have them for work but also had them at home.You havent seen rust till you work on Ohio stuff.I just hope your helper has some tools and can flare lines.Best to replace them if they are rusty.Rocky