Need 1 injector for a diesel JD 1010C

[bingles]

This is my first John Deere, I am very excited, I bought this tractor about 2 years ago and just now finally about to bring it home, and come to find out someone removed and injector for it and it is lost.. Thats all I need but am having hard time finding one. Does anyone on here have an idea?

The old JD part number is AT 16344 T its of course obsolete

This tractor ran great 2 years ago, I am not sure why someone took these off for sure yet. I got 3 of them back but missing one.

Brian