Re: 2006 Kustom Koach Westwind WT264 FAQ's
Keep in mind that as of January 2007, the requirement for ULSD has required redesign of all diesel engines (in vehicles at least). I would not buy a new design engine for a couple years until they get all the bugs out. Plus, I would be reluctant to commit to an older diesel until the effects of the new ULSD fuel on them is fully understood and compensated for. Which sucks, because you really appreciate that diesel towing up hills.
Brand? Take your pick. I always had problems with Ford, have always had good luck with Chevy and probably would go with Chevy if a gas engine was the final decision. However, for diesels, from what I hear on the forums, Dodge would be a real contender.
Size? I like the extended cab long bed. Short bed can be a problem when turning with 5th wheels. Short bed standard cab may have problems towing longer trailers. 1/2 ton is pretty much marginal for towing, although there is a Tundra being advertised with 10,000 pound capacity which might be worth checking out. 3/4 ton is better for light towing and the 3/4 HD is even better. Although the latter would be overkill for your trailer, if you ever upgrade to a bigger trailer or carry a big load it might be useful.
Is it a fifth wheel or travel trailer? If a fifth wheel, make sure that the pin weight doesn't cause you to go over the rear axel weight rating of that 1/2 ton truck which is a common problem. If it is a travel trailer, there is less chance of overloading the rear axel, but it may be more of a hassle to tow and hitch up. Although there is a hitch called PullRite which claims it fixes this problem.
Also, keep in mind that the 7000 rating is with no accessories, cargo or passangers in the truck, and only a 150 pound driver. So it is marginal for towing that trailer, but if you watch the weights in the truck and trailer it can be done. The 350 is a good engine and should handle the towing ok on the flats.