I have a 1965 122S with single circuit brakes - no vacuum booster. I will soon be doing a makeover on my brake hydraulics. I noticed that hard lines (sometimes called pipes) are available from VP Autoparts, and they are faily cheap (a whole set for about $56). But they are copper, wheras (I believe) the originals were an alloy of copper and nickle (the same alloy that a U.S. 5 cent piece is made out of).
Anyway, my question is, my original hard brake lines seem fine, I don't see any damage. And since copper/nickel alloy is just about corrosion free, I don't see any reason to replace them. If I had one that was dented or bent, that would be another story. I can't see replacing them with copper tubing, that will corrode over time. So am I correct? Or should I replace these lines that are now 40 years old?
Tom