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ChasnotRobert
Scilly.Suffolk
I'd double-check that, 120mm is more likely: http://www.sheldonbrown.com/gloss_sp-ss.html#spacing
If I'm right (not a given), then the rear chainline will be 42mm.
Road double cranks have chainlines of around 41mm (inner ring) and 46mm (outer ring).
So you can either use the "correct" BB for the cranks and the inner ring position, or the outer ring position with a BB 8mm shorter than is recommended for a derailleur set-up.
http://www.sheldonbrown.com/chainline.html
PS I have 7410 and 6400 cranks going spare. #spam