make an open outlaw cage kart.... please?

Not sure what you're pushing for....or There's already manufacturers. What are you wanting to accomplish or what do you want others to create?
Not pushing against anything.... i know a few phantom customers that have converted their flat karts, and do very well in the lower hp classes. And as a long time phantom customer, it would be nice to have a phantom for the higher hp open classes.
I have a Coyote/QRC conversion kart that uses 4 QRC front receivers to mount the QRC cage on the Coyote LTO chassis. No reason that couldn't be done for a PRC chassis... I'd sell my conversion kit for reasonable price if someone's looking.... ~Ted