OK, thanks. Since the nut is badly mangled , I will opt for a trip to NAPA and splice in a section. I have all the double flare tools so that seems the easiest route.

Maybe on the other side I will try the torch first, nothing to lose if I burn it up.

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1974 280C MBZ
1995 BMW 840 Ci
1999 996 Cabriolet Porsche
2005 Toyota 4Runner
1974 VW Westfalia camper P27