Yeah, I think you're going to need to get a rear hub and two rims just to make things even. Then your MA40 wheelset will feel lonely and you'll have to get a new bike for it.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"