It's my understanding that you'll want road brake cables because road vs mtb cable designation is important only at the lever and you're using a road lever so that Jagwire Racer kit is what you'll be wanting. Someone feel free to correct me if I'm wrong.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"