Don't get hung up on naming it. They were made with many different brand & names on them, all of them aside from the plastic mag version is the same. Mine is a Sears.
Ejectors aren't mass produced by any company, but I have contact info for a guy who makes them if you ever need one.
Extractor should be the same on all of them, so you can still call up savage arms to get one.
You can get parts to convert them to the common metal magazines used now. I tried it and it's not a totally 'drop in' type job for the one I had. Feed ramp is different.