Well, in looking at Tip49s profile we see he has a 1950 F47.
So it's a Bonus Built.
Here ya go:
It's 7C-81235000 on the right side. It uses the arm and the three parts above the 7C arm that are welded to the cab side door jamb. The rubber stop is inside the door beyond the inner door frame and can be accessed through the access panel. For the rubber stop, I used the rubber flathead (239) motor mount (the smaller of the two) and it worked perfect! Make sure you really bend the ends of the cotter pin over, I had mine fall out once and it was a pain to fish the stopper out of the door bottom. If you need a picture of mine installed, let me know and I'll go out and take one
Good luck!