Since it has been a while since I cruised to many of the truck conversion manufacturer websites, I thought I would do that and provide the links here (along with my own personal opinion on there usefulness, webmaster don't get all bent out of shape, it's just my opinion)
If I have left any out, please post them!
Show Hauler
http://www.showhauler.com
(They updated the site with some new colors but dropped the huge photo gallery.
What a bad move that was)
Butler Motorcoaches
http://www.butlermotorcoaches.com
(Site is gone, not sure if they are still around or not)
Dynamax
http://www.dynamaxcorp.com
(Added the new Grand Sport Ultra, really refined rigs)
Easter Conversions
http://hometown.aol.com/lea9352812/
(Seem to be gone)
Factory Motorhomes Incorporated
http://www.factorymotorhomes.com
(The site provides no details about the company and very little about the product with no specifications. Not sure what to think about these guys)
Haulmark Motorcoaches
http://www.haulmarkmotorcoach.com/
(Definitely have added some details, but still leaves a visitor wanting more)
Kibbi
http://www.kibbi.com/
(Much more info as well as detailed photos of some customer rigs. But the site is real weird to navigate, might be my 19" monitor)
Kingsley Coach
http://www.kingsleycoach.com/web/index.html
(Lots of new information, love that state trooper rig, but the images are cropped improperly and it really makes the site look bad)
NRC Modifications
http://www.nrcmod.com/index.html
(Finally some product photos! And some real info, it's getting better)
Optima
http://www.optimatrailers.com/motorhomes/index.html
(Nice site, well organized, still would like to see more pic's of built rigs)
Power House Coach
http://www.powerhousecoach.com
(Not much new here, but wow! are those insanely long rigs. Like the innovations like the lateral drive to get that monster out of a jam)
Powerhouse Conversions, Inc.
http://www.powerhouseconversions.com
(Looks like a smaller operation, but is adding photos of the rigs they have built, just wish there where photos of the interiors)
Transport Designs
http://www.transportdesigns.com
(New updated site with a detailed build photo gallery. This site is much improved over the old one)
United Specialties (Trendsetter)
http://www.united-specialties.com
(New site and new url. They can definitely loose that intro. Definitely more info than ever before, but still needs some organizational help.)
Wild Side Conversions
http://wildsidellc.com
(Really like the updated site, love the big clear photos in the flash piece on the home page. Some of the other photos are a bit small and it would be nice to be able to blow those up. You have to check out the Mack Vision Horse Conversion, that thing is crazy)