Is there a manufacturer that makes a steel version of this trailer type?

I've been looking around for a while and I can't really find anyone building a "real" step deck for a cab/chassis hotshot truck. I want a 40ft flat deck with mega ramps but I want a low gooseneck so I can use ramps in the front to carry 3 cars or a full 40 ft of freight + the step deck.

Short of buying a traditional 40ft and having it modified I've not been able to find anyone who builds something like this. Anyone know any one building something like this?

 

Oh wow.. I looked at their site before and totally missed the step decks.. I bet they are expensive... lol might be cheaper to custom build....