Rear axle swap question

[lts70]

I found a five lug 12 bolt rear end in a trailer that was made out of a 1983 diesel 1/2 ton. This trailer is a leaf spring set up. I am wanting to put it in my boys 1968 three-quarter ton coil spring truck. My friend is willing to switch me axles if I swap them out.


Would this axle be the correct width?

How much cutting and welding would be needed to swap these?

Can I just cut off the perches and swap them or will I need to buy anything new?

Here’s a picture of the 12 bolt coming out of the trailer.