Recently did this myself. The swap was pretty straight forward. Here are a few things to be aware of.
Inside measurement of wheel wells is narrower on the trailer bed. Problem if you want to haul plywood or a camper.
You need to plan something for your tail lights. I used L.E.D. ovals recessed mounted between the bed and bumper.
The trailer bed is narrower. I am running 12 bolts with 2" spacers and the fenders do not cover the tires.
Mounting a canopy is a bit tricky as the top flange of the bed turns outboard, contrary to the stock bed.
I still feel a little shameful that I took a good, serviceable trailer out of commission.
All that said, I do not regret it at all. I think this is how they should have been built in the first place! I just had a pair of rock sliders made and reccomend them as well.