Oh boy, you are standing on the precipice looking down the Campy BB rabbit hole! It hasn’t been brought up in a while but there are a few threads here going into exhaustive detail.
First and most simply, you will need an ISO taper. There may be others, but modern Campy and Phil Wood BB are the only modern I can think of. Unless the original BB is trashed, I would just replace the balls and use that, or just buy a similar used if you need better condition or Italian/English. Off the top of my head the 115 post CPSC was asymmetrical and 113 wasn’t but you can use either. Nice thing about the old stuff and friction shifting is a mm or two between friends isn’t a big problem. I’d look for a 115 mm ISO.
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N = '96 Colnago C40, '04 Wilier Alpe D'Huez, '10 Colnago EPS, '85 Merckx Pro, '89 Merckx Century, '86 Tommasini Professional, '04 Teschner Aero FX Pro, '05 Alan Carbon Cross, '86 De Rosa Professional, '95 Gios Compact Pro, '95 Carrera Zeus, ‘81 Masi Gran Criterium, ‘81 Merckx Pro, ‘89 Cinelli Supercorsa, ‘83 Bianchi Specialissima, ‘VO Randonneur, Ritchey Breakaway Steel, Rivendell Rambouillet, Heron Randonneur, ‘92 Ciöcc Columbus EL