Who can custom build a sleeper onto a mid-sized truck, not an 18-wheeler?

Hi.....I'm hoping to go into the transporting biz and would really like to get a mid-size/medium-duty single axle truck (not a semi 18-wheeler), Freightliner (m2 106 model?) or Kenworth/Peterbilt fitted with a club cab and then add a small (but legal) sleeper onto the back of that. I'm thinking I'll need a chassis at least 110", but would be interested in seeing if a 106" chassis would work.
I can't seem to find any info on this kind of custom-work. I think this design makes a lot of sense. Maybe I'm just dreaming.
I sure hope there's someone out there who can steer me in the right direction.
Here's a truck that looks like what I'd like but with a sleeper (small) built behind the cab. (This is from the Freightliner website)
Dan

 

Thanks, Rick! Good ideas.

 

Thanks, Popcorn! That's a good idea, too. Yes, have checked with custom sleeper people, but far and few between. Still checking. I have checked ICT, but I'd like to find one on West Coast if possible. That's one of my obstacles. You'd think there'd be more out here . Interstate 5 isn't exactly a small freeway!!

 

Thanks, Lonesome and Mr. Lee....Really appreciate all these responses. Thinking it might be best to just go to Freightliner and see if they have an animal close to what I want. Who knows? Maybe they're hidden in a back room somewhere.

 

Hi again.....Thanks everyone for your ideas! But, maybe I should submit my post in a different way...I've actually seen about 3 trucks out there that do have a club cab (or should I say seats behind the front seats) AND a sleeper behind that. So, does anyone know if these were custom trucks or is there a manufacturer who offers this? I'm willing to go "custom", but where do I start? I've written to Freightliner and still waiting for a response.
Thanks!