Originally Posted by bobsyourbike

One problem is, most modern square taper BBs like are symmetric. You need one with offset. So going by the length won't guarantee a fit. Why not just get another fixed cup or another standard BB? Nuovo Record are common as dirt. Shimano or Suntour will work if you don't want to spend the money on Campy. Hard to beat Dura Ace quality, and it's an exact fit. You didn't mention if the spindle was also pitted.