I have a 1955 Chevy Truck with a Blazer Drivetrain and axles, the front axle is drum brakes, I found an front axle with disc brakes that measures the same, but I don't know what it is out of. The number on the axle tube is WB6704211, I think the last 2 numbers are 11 but it is hard to read it. It also has the numbers 458856 and GM3.
If someone could tell me something about it I would be gratefull!

Thanks!!