I dug around when I got my GQF Ratite hatcher for some sort of turning system to convert it to a incubator.
It was $2-300 to do it. I ended up sticking my turner out of my foam incubator in it for now.
Here's a link, but no picture:
http://www.cutlersupply.com/store/item.0906.htmlI'll see if I can find a picture.