Rugger Vaquero Hammers?
I've switched hammers in several different Ruger single actions, but I haven't tried the new hammers yet. However, I'm sure they will fit with no problem. Midway can sell you new hammers (for the old models). In my opinion, if Bill Ruger would have been in business 100 years ago, there would be no Colts SAA. Ruger's last forever, and usally give their owner's very few problems. I should know, I own 21 single action Rugers.
"Except For Ending Slavery, Fascism, Nazism, and Communism, WAR has never solved anything"