I currently have mismatched wheels on my Peugeot Triathlon. The previous owner told me that the rear Rigida wheel (the hub says Shimano 105 on it) is original, but the front Mavic wheel is not. I don't care too much, but it bugs me that the rear sits higher than the front.
I found these 32 Hole Mavic 700c Real Ultralite Shimano Wheels on Craigslist:
http://denver.craigslist.org/bik/849799348.htmlAlmost new 700c 32 hole wheels handbuilt with Shimano grey Open Pro rims and Real Ultralite hubs. Hubs are Shimano 10 speed compatible (not 9 spd) and have titanium skwewers.
Unfortunately, I don't know about mounting wheels in the slightest bit. The bike has a full Shimano RX100 group and there are 6 speeds/levels on the cassette.
I'm thinking that they probably won't work, but I figured I'd check first.