RandInt ?!

[Traggey]

Yes, you preform a diffuse channel bake from the painted mesh to an indentical copy with a proper squared out UV.

However as I stated before, it will look terrible unless you use HUGE texture sizes, which simply will not work. So that is not a method you should even consider trying.

And no, you can not do that, you'll need to add the body manualy.