What modding do you speak of, disaster? As far as I know, you can drop in a hammer (key word: hammer, nothing else) without a problem from one to the other.
Johnny, I can't give you a for-sure answer, but I would recommend you go by trial and error - I doubt there will be any errors if all you're doing is installing the hammer alone. That being said, are you sure you'd be able to install the new hammer on your own? You probably shouldn't be dabbling into internals if you don't feel confident enough to dive right in and don't want to just hand it off to a gun doc to do the work and find you the part.