Buy another frame that is neo-vintage and install that stuff. Or if you love the Cilo as an everyday rider, update and ride it...or not.
I have 600 EX stuff on one bike (Nishiki Tri A), and when I ride it, it feels right to reach for the shift levers and see the tangle of cable. I have a Basso Gap that has 1990s Campagnolo stuff. It feels right (my favorite).
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super