It is not an original axle. It is a Dana 35 with more traditional spring perches, a limited slip 3.73, and disk brakes.
What is the concern about supporting the truck this way? I have jack stands under both axles so the weight of the truck is compressing the springs. I have been lifting vehicles that way for 30+ years, which isn't to say that it is *right* but I am not sure what your concern is.
The hanging soft lines are one of the things I am not really happy with. A lot of vehicles do that, but I don't really like it.
I have been trying to usse off the shelf parts as much as possible, but the more I look at these, the more I think I want a custom set of lines with 90° banjos.
