If I was doing it, and wanted to keep it looking original I would get some new tube, bend it using a tube bender, and cut the old line flare it, and replace the bottom 90 or s bend on the lines using the JIC fitting like on the tractor all ready,
for fast and dirty fix take out the torch and braze them up, and keep on going,
the last way would be to get some longer hoses, and cut off the bent metal reflare and use longer rubber lines,
some depends on skil and tools, but if tool short take the lines off and take to a shop that has the tools and have them reflare and bend the parts,