Ford Sindle Id.

What year are these spindles? What other info will help.
Thanks in advance

 

1940

 

Not a good picture, but looks to be a 37-41.

 

Need a better picture, but looks like '37-'41 Ford. Outside to outside boss should be 5 1/8" takes 5.5" kingpin. '42-'48 takes 6". Has the spindle shaft had some machine work on it? Looks like top of the round back has been cut out for later brakes?

 

are 48 p***enger and truck the same?

 

thanks for all your help