Hi there....I am looking at buying a 1986 18ft 4 cylinder automatic Sunrader with 90K miles and have a few questions. Although I have been looking at several makes and models of Toyota RV's the Sunrader seems like its the most economical. This Sunrader however does not have AC in the cab. Is that standard for some 86 models? Would it be expensive to add AC in the cab? The owner says that the lack of air and power steerring allows less drag on the engine, but I would like AC. Also, the fact that it is an automatic, will I get less fuel economy than a manual and will climibing hills be harder out here in MT. I have been been looking at a 84 manual 20ft Dolphin with 60K miles. Which would have better gas mileage? Any information would be appreciated regarding things to consider before purchasing. Mary