Have you looked at the side mount plates that Shayne makes, he can cut any design you want into it and it bolts up just like the one that you seen for sale by ALERAY. I think it's like $100-120 and that's with a light if I'm not mistaken. Below is the link to his site:
rescue road service
The side mount is $100, the threaded bar is $20, and the light is $10 for a total of $130.