Bought my first cargo to transform...Pics

So i bought my first cargo trailer to transform. I was limited by what my truck could pull. I will be pulling this with my modified toyota rock crawler. So i went with 5x8 with a 6' ceiling. Has trailer brakes, side door, vent and a ramp in the back which was nice.
My first upgrade is a window. I will continue to look but is there a good instructional on here how to install one?
Do you have to change the support the wall has? etc...
Also i want to change the springs from being under to on top of the axle. (sprung over) any good instructions for that would be awesome.
Then it will be adding the propane tank holder and battery holder.
and so on so forth.
any help would would be awesome..
PIcs::

My first upgrade is a window. I will continue to look but is there a good instructional on here how to install one?
Do you have to change the support the wall has? etc...
Also i want to change the springs from being under to on top of the axle. (sprung over) any good instructions for that would be awesome.
Then it will be adding the propane tank holder and battery holder.
and so on so forth.
any help would would be awesome..
PIcs::

