I don't know if they made a kits in the 40s, the earliest I have heard of was the old Dixie Gun Works kits but my knowledge is lacking in this area.
As for a Damascus lock, I have never seen one on any gun new or old. Of course beauty is in the eye of the beholder but the lock won't look right on the gun. Almost all builders pick a time period to replicate and try to use the correct parts for that style or period. For instance; a Germanic lock like a Siler on a Tennessee rifle would really look out of place, an English lock like a Ketland would be just right.
I saw pictures on line of a gun a guy built where he apparently like the striped ramrod look and decided to take a torch to his whole gun and proceeded to make his gun look like a barber pole with 2" wide black charred stripes. I thought "what a waste of good gun parts", the gun was an abomination after he "decorated" it.
When I asked him why he did it, his answer;"I like it", end of discussion.
If you do a good job on the gun, somewhere down the road you might want to sell it or trade it. Any anomaly with make this process more difficult.
