Can you help ID my front axle?

[Jebb1978]

I think the springs and front axle are wrong for this model, I took some photos of the shackles that seem overworked and the leafs are touching the frame. That can't be good... It makes lots of noise going down the road and rides like a diving board. I am thinking of replacing the springs with stock ones or a slight lift kit made for this truck to straighten this mess out. Any advice guru's? This is my first 4x4 project. The truck is a 67 K-10.