It is very hard locating exact replacement parts for older and vintage RV's. Some companies have opened up and specialize is Replacement parts molded from factory molds etc, but they are more for Classic Tin cans... Not your everyday Joe building a not so famous Rv/trailer. Ive watched Vintage RV shows rebuilding a classic but havent come across a show with a 70's Nomad etc. Each RV'er has his own taste in what they want,, A Lincoln,Cadillac or even the Rolls Royce of RV's,,Its all the individuals taste. Some of us don't have the luxury of country sides filled with Parts units in fields. Some are in areas where there are NO RV scrap yards. We are simply at the mercy of C/L or Ebay. I have found that calling junk and scrap yards and kinda throwing a bone at the counter personel at asking there network of scrap yards if they happen to have a rough list of any RV's,motorhomes etc in the back fields of the scrap yard.
Scrap yards hate RV's To much wood and material to dispose of and not much money left in the metal to recoup the cost of destroying it.
I had a great connection with a scrap dealer in Ca. who would drag them in off the road or backyard, that the city paid him to remove. He would get several in and he would jingle my phone and give me 3 days to rip apart what I needed. (I traded working around his scrap yard for payment,like Bartering). RV's take up alot of real estate in a scrap yard.. So,, pick up your phone or take a drive to a scrap/junk yard near you and get to talking with the desk people and see if they can NETWORK for you,, and if they help ya out,, a nice box of donuts or a paid lunch goes a long way. I call it working SMARTER,,NOT HARDER.. Plus you can put a Help me add in here and fellow RV's can also network for you.