The only other drivers drop high pinion axles used in light duty trucks comes on a 2003 and up Dodge 2500 and 3500 series pickup. They are made by AAM.
The american axle manufacturer of axles makes very good axles. This is the same company I believe makes the GM corporate axles as well. I have seen these axles up close and personal and believe them to be stronger and superior in quality and design.