I think a 111mm campagnolo AC-H BB should do the trick quite nicely for use with the ring on the outside but you may have to grind off the inner rings tabs so they don't hit your stay. If you have an italian BB shell send me a PM.. I have a bunch of 111mm and 109mm campagnolo BBs that would work well for you. Otherwise, I believe the ISO AC-H BBs can be had relatively cheep.
1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear