Suitable replacement for a Shimano UN71 BB?

Re:

Cool. Measured the width of the shell this time but the drive side cup is still in the frame. I assume that needs to be included as I got 64 when I measured as is.
 
Re:

Not included, cups can be any width. Sounds like its measuring wrong. It'll be 68, but check some P7 bike posts.
 
Re:

It is the frame you measure, the bit you screw into is called the shell.

Crossed assumptions along the line :-D
 
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