Sorry need help ID this rear end

[Steven R]

I have this 3/4 ton frame I just picked up for some other parts and I am told that this rear end is a high speed rear end. It is of no use to me as i have a leaf spring dana 60 in my truck. Just want to give a accurate description of what I am planning to sell. I can not find a 60 number on this axle. I am assuming that this is a dana 60 for a spring setup and mine is a dana 60 for a leaf setup.

Thanks for you help and time.

Pic 1 2 3 4 are the axle in question
the last pic is my truck a dana 60 leaf setup