Moto bb shell should at least be Swiss by 1980. Not sure the year of the frameset, but looks around '81. Here's the '81 Catalog catalog page.



Check out the catalogs hosted by our bulgie , here:

https://bulgier.net/pics/bike/Catalogs/Motobecane/

Regardless of year, the Le Champion always seemed to have mostly Record/Nuovo Record group. If a Gran Sport crank was used, it was the 5-arm Nuovo Gran Sport, not the 3-arm one, which would look weird with this '80s looking paint scheme. Velobase says that 5-bolt crank takes a 120mm spindle.