I have a 1978 Holiday Rambler (Ramblete). I have all original equipment...fridge,furnace,water heater, stove and oven. I had the furnace redone even thou it worked still. I didnt want to die with trying use the heat. I replaced the water over air pressure style tank with a demand water system because the old one was to troublesome. If it still has the old converter it will need a new type because the old one will hurt batteries very fast.
Mine had 15 year old tires on it when I moved it but I had no choice because the old owners said get it that day or it didnt go. I got the bearings checked and was amazed on how good they looked so I just had them repacked and everything was fine. The brakes are Dexters and all 4 of mine worked great. I have many hours in cleaning and replacing old 1970's era decore. My holiday sat in the woods for many years and doubt many brands would have lasted as well. Its built like a tank and dont think you will be sorry if the price is right.