I had 4 boxes built for some guys out in Texas. The company that helped build mine, built these. Here are 2 of them on their new rides. Bradley Sheet Metal in Keystone Heights, FL 32656 is the company. Their phone # is (352) 473-7018. Dale will treat you right. He is finishing up on a Toyota box today. He can build any dog box you would like.
Thanks Dean for posting these pictures it is greatly appreciated.
If any one is interested I have the drawings we used to construct this box. This one fits a 500 ranger and is made out of 1.5" aluminum tubing. Send me an email to email@example.com and I can send them to you.