I don't have an answer, but I would suggest calling Rigid.
I had an issue with missing parts in a Rigid light kit I purchased from a vender. I had already installed the harness and switches on a UTV when I realized the brackets in the box were not the right ones. The vender was not very helpful, as their solution was to take it all back apart and send the entire kit back. Once they received it, they would see if they had another kit in stock to send me.
Needless to say, I really didn't want to tear it all back apart, as I had spent quite a while routing the wiring and securing it in place. I called Rigid directly, and they sent me the missing parts the next day. Needless to say, their customer service was outstanding. I will definitely buy from them again!
So although they don't seem to have a specific kit available on their website, they may have seen it done, done it, or have a suggestion as to how to do it. Heck, they may even decide to make a kit available if there seems to be enough interest.
Just my 2 cents....