I once traded my 5.14 gears out of my one ton straight up for a 4.10 gear set. It was through the classified ads on pirate4x4.com
I've had several 4.10 sets over the years, a couple came from 3/4 ton automatic trucks, also pulled a couple from one ton trucks. It helps if you have a list of 4.10 axle codes so you can identify what you have. There is a stamped code on the axle center section.
