Technical Front Axle Identification

I have what I believe is a late 50s (Maybe an Apache) front axle used on a custom lowered "Underslung" set up that is in desperate need of kingpins replacement. If anyone can better identify casting #3656872GM165 so I can locate the appropriate kingpin kit would be greatly appreciated.

 

Wow, Thanks! I did a search and came up blank. Anyhow thanks for that info.

Sent from my SM-G892A using The H.A.M.B. mobile app

 

Well for one that isn't a straight axle that is an I beam axle. A "straight" axle is straight tube. If you post a decent shot of the back side of the spindle Someone can probably ID it from that.

 

Thanks for that info, I removed "Straight" from the description. Here's a shot. Its upside down too......