Power steering High Pressure line

[wolfthing2000]

There is a steel line from the steering box to the high pressure hose on my 69 K-20. It has a tight bend at the hose end that interferes with the fitting nut and it evidently was not backed off fully on the last thread or so and the threads won't allow dissasembly or reassembly at this point, the nut just spins. I have tried a lot of this and that to get it apart, or back together and now I am giving it up.
What part numbers do I look for , if known. or are they available from parts houses and not GM. I nedd to replace the high pressure hose anyway so I guess the steel line is not that much more to deal with..

Any info, as usual, greatly appreciated.