I sent an email to that Craigs listing, asking if he would sell the 'extra components' not on the bike separately. He said, 'No, they go with the bike". So I asked if he would part it out and offered generously (I thought) for the original group, to which he replied, "No way".
DD, you just have a magic way with people?
....or a bigger budget...
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Vintage, modern, e-road. It is a big cycling universe.