vacuum line

Hello, my vacuum line is loose at both ends, I have tried to tighten it but I do not want to break the nuts or the metal line inside the carb or dist. Does anyone have any idea where to find a replacement line? Thanks. here are some pictures for reference. The lines do not seem to have a flare...

I searched, yes, I searched. Before that I looked all through my Emissions Manual. 1978 (Sep '77 build date) Fed Spec 40. I had someone else under the hood for some work (film at 11) and they left a few vacuum lines disconnected. My question - where does this port - see blue arrow - connect...