Two Horse Trailer Plans Large Animal Transport Vehicle Build Your Own. These plans will show you how to build your own 2 horse trailer. This simple design allow you to alter it the way you like. Very easy to follow drawings. I will mail you hard copies on 8 1/2 X 11 paper. All plans are designed by Ben Stone. Ben is a retired Engineer in Canada. Ben also drafts these himself using the latest AutoCAD software to ensure accuracy. He studied Engineering back in the early 1980's. After over 30 years in the Construction industry he developed a passion for building cool items around his farm and cabin. These are great DIY projects. With a little skill anybody can Do It Yourself. Ben is always a email away if you have any questions while building one of his projects. He is adding new plans all the time.