Hi All

Does anyone know of any aftermarket upgraded rear axles for sale?
I have a bit of a project underway and need to do what I can to upgrade the drivetrain.
I have found front axle and CV upgrades. Will be getting heavier duty driveshafts and lockers.
What I can't find is upgraded rear axles. Would prefer to buy some instead of making custom jobs.

Another option is to build a custom Ford nine inch rear end with a huge array of upgrades available.
Has anyone else been down this path?