While it has been said that the Euroarms Remington's are closest in overall size to the originals, I don't know if this is true with the internal parts dimesions.
My guess is that the original trigger would require, at the very least, some gunsmithing or modification to work & index properly. If you have to do that, please use a reproduction, instead of ruining a genuine original part.
While I admire your desire to have an original part in your gun, it won't make it any more valuable and you would be wrecking a part that could help to restore an original Remington NMA.
Just my opinion,
John