Kapan made 1892 and Original model 1892 part interchangability

[Bleachedtech903]

I have an original Winchester 1892 made 1897. I have been looking for a 38-40/44-40 right cartridge guide for a while now. While looking for one on many different websites to no avail, I found where I could buy a Japan made 1892 44-40 right cartridge guide. I compared the picture of an original and the japan made one, they look almost identical. I assume the japan one uses metric threads, which I believe is fine since I would use the japan made screw also. The original win 1892 doesn't seem to have threads on the receiver for the guides, just a hole. I believe it could work alongside my original win left cartridge guide, since the miroku/browning 1892's seem to use the same/similiar guides as the originals, but change the lifters. Here are the pictures I have compared. (The japan made is on the left)
Is there anyone who could give me input before I buy the parts?

[M-Tecs]

I cannot answer that. I have read that some of the Italian parts are interchangeable with the originals so that maybe another option.