Hello Bob Wright,
Thank you for your information and for the direct question about what I am looking to do. Sorry for having been away from the discussion for a couple days.
I did post some follow up information but it seems to have been buried in the discussion.
My Intention :
1) I have a New Model Blackhawk in 41 Magnum.
2) I want to attach grips and grip frame from a Cimarron Thunderer (very different shape grip from the SAA or Blackhawk) - the frame has the same hole pattern as a Colt SAA as it is an Uberti clone.
I was once told that this can be done - but now believe that some amount of rework would be required. I happen to be a degreed Mechanical Engineer with years of experience doing metal work on cars and guns so I don't see anything as impossible. If all I need to do is weld over and re-drill a hole or three I will probably go ahead with this project. I am just wondering what I am up against.
I also happen to be out of the country right now so I don't have access to any of the parts I need to check to figure this out.