Stretching a Factory Sleeper - How & Who

I am looking to see about Stretching my existing Factory Sleeper on my Prostar.
Yes I have looked at the Legacy and a few others. but honestly for $20K its a hell of lot more than i need or want. Plus i don't want to lose the look and shape of my ProStar.
SO - Stretch it!!! . Does anyone know of any companies out there that can Stretch an existing Factory Sleep and has done it well?
I would like to stretch mine and add @ 12-18 inches on here. and Im hoping to Stretch the sleeper ( would be better and cheaper than existing Legacy.
SO - Anyone know of a few good shops that they can recommend to me or what kind of price im dealing?
Thanks

 

There is a guy in ky that does this. sorry i don't have more info than that.

 

@KANSAS TRANSIT

 

> Need a little more to work with. All i get is a ton of info on the Kansas city Bus City with this

 

>>> Never mind - I figured it out. that's what happens when i do things without Coffee - Thanks

 

Prostars aren't worth stretching...thats why you don't see many big sleeper prostars out on the road. my KW T660 is stretched out to 144 inches...bought it this way.

 

Well why isn't a ProStar worth stretching? Have to be mean but I find that insulting
I mean okay my sleeper is a bit small which is why I want to stretch it. the engine, the tranny and the frame are all very solid and I like Cummins motor

 

There's just SO much wrong with that particular typo.....

 

Not meant to be be insulting, but it's the truth. I can buy a used Prostar for under 20k that still runs. Truck frames are very solid, they are made out of hard steel. Engines are engines, they last as long as you take good care of them...its the rest of the truck that isn't worth much in the long run.