Technical Spindle identification

Could someone help me identify this spindle? Kingpin is 5.5 inches long and cir***ference is .813. Boss length is 2.250. This doesn't match any identification charts I have looked at.

 

'64-'70 Chevy G10 van, I have them on my '40.

 

Would you happen to know the kingpin cir***ference and boss length?

 

It looks like the front axle may be homemade using the ends from the Chevy I beam axle.

 

Could someone let me know if there a disc brake conversion for the spindles that I have?

 

Are you sure you measured the cir***ference not the dimeter? Definitely not Ford

 

Chev truck parts. They came off this:

As @Blairsville G pointed out.

 

Google this: 1964 - 1970 Chev G10 disc brake conversion

 

I miked across the kingpin

 

Cir***ference = diameter x pi.
Where pi = 3.1415.