Stock Trailer Out of a Flat Trailer

This is a little weekend project i did so i could hall all our sheep and wee didn't have to buy. We paid about $300 for all the iron not including the panels. I used a trailer that had short sides in it. You could do it just as easy with a flat bed. It is also removable with the bolts connected to the angle iron. You might be able to build it with these pics or it might give you an idea. Hope you like and please vote. Thanks.