Meh, go BIG or go home! https://www.quadratec.com/products/24252_100_07.htm
**EDIT: Smittybilt has one for about 35% less the cost of the Tuffy one.
I've got the tuffy version of this in the back of mine and it has worked out well. It was used when I got it and the lock mechanism is a bit fubar but it serves the purpose. Slides out nicely over a CJ gate.
--Ian