As promised, here are pictures of my setup with Superbe cranks and a Miche 107mm bottom bracket.

Pic 1: Superbe Crank


Pic 2: Cranks on spindle


Pic 3: Drive side cup out a couple of millimeters


Pic 4: Non-drive side cup in a couple of millimeters


Pic 5: Chainstay clearance = skinny (note filed off tabs)


Pic 6: Chainline = pretty good


The setup has been working well. Only thing to remember is to put some green Loctite on the drive-side cups when installing... otherwise, the whole BB is liable to shift to one side or another.

Good luck!