BSA (English, British, or I.S.O) bottom bracket and an Italian one? are usually 68mm or 73mm wide, while Italian threaded bottom brackets.
Can you really get away with using an English on Italian? some of those Parises came with that proprietary Pinarello M.O.st bottom bracket.
The bottom bracket shell is the part of the bicycle frame that houses the bottom bracket. Usually the adjustable cup threading, Right or Generally Italian road frames have 70mm wide BB shells and British and French use 68mm shells.