Garnett, if I get that 219B, I'll buy the parts and eyeball them and the two barrels ("B" and Utica) to see how close they are. If it's a matter of just swopping parts, I can do that. Machining I leave to an actual gunsmith.
I might be able to email you some pix from my tablet, but have never figured out how to post them on websites, and my desktop PC may need a lot of updating to get there, so unlikely.
I'll let you know what happens but whatever happens will be in a few weeks since the seller is going on a work trip and will "think about" my offers while he's gone. And if it doesn't get done by 3/22, I'll be on a road trip in Baja and western MX for three weeks after that, so it might be a while.
Mike Armstrong