70s dodge motorhomes

My wife and I remodeled a Class C Dodge back around 2008. It was a little bigger than the one you pictured, but along the same lines. Be prepared for it to have a lot of rotten wood, especially up in the bunk area. If you have a place to get it inside, fixing that type stuff will be a lot easier and not dependent on the weather. The fridge, water heater, gas stove, furnace and roof AC all need to be checked over good to insure they are in good working order. I cool sealed our roof after patching a few questionable places, but if I had it to do over again I would have put a rubber roof on it. The inside was the easy part. I installed new carpet front to back and my wife made new curtains, seat covers and cushions. It ended up very nice for a 78 model and was plenty comfortable for 2 people and 3 little dogs.
When we bought it, it had a new 440 and 727 with a Gear Vendor OD in it. It ran really well, but it had Flowmasters that the previous owner had installed. It was too loud and one of our dogs hated riding in it because of that. We used it enough to learn that we liked to camp and I sold it to another guy on Moparts, and then turned around and bought a Sunnybrook 5th wheel to pull behind my Dodge diesel.
If the one you buy has the old 16.5 inch wheels on it, find you some 16 inch wheels and replace those lousy 16.5's! Spare and all. Nobody keeps those old tires in stock anywhere, and if you have a flat you could sit there camped in a parking lot for 2 or 3 days until they can find you one to replace it. Most tire places can get 16" load range D tires in a few hours from a local distributer if they don't have one. If you do get a Dodge big block motor home, find you a spare rear dump passenger side exhaust manifold. If the one that's on it isn't cracked...it will be eventually. Whoever sits in the passenger seat will get their left leg roasted because there isn't much insulation in the doghouse. Not a lot of room to add any either.
Good luck to you in your hunt and restoration of one. If I were to do it over again with a vintage motorhome? I would buy an early 70's Travco and put a 5.9 Cummins in it. Look that up on You Tube! Those are some neat old motorhomes, and they don't rot.