The Axial wide brakes are getting hard to find, REI used to have them but sold out about a month ago.
Evogear has the 2004 look wide brake for $ 25:http://www.evogear.com/productdetail...1&t=sp&sp=2509
The looks and rossis are basically the same binding so as long as the year is the same the brakes should fit, there are a couple of pins in the front of the heal where you slide the brakes in and out.
Christy's website says they have rossi wide brakes, but they want $ 50 a pair:http://www.christysports.com/
Sportsliquidator has the look FR 12's with the wide brake for $ 189:http://www.sportsliquidator.com/item.asp?id=3109
I don't know if they would sell brakes only, but you could give them a call.
If you get desperate you can also get a vise and bend what you have now, there are a few posts on this otherwhere on this site.