I have a 12 bolt 6 lug rear end that came with the truck. I'm working on a drive shaft but need to know what this came out of. Does anyone have the web site or a book. Casting number on the axel tube is HC 1129 W Casting number on the outside of the Jug is 3856525 with an N below the number. Not much of a hand with a computer Thanks for the help. Mike
