Our '56 Safari was a "Park Model" meaning it had no tanks when originally built. It was intended to be hooked up at a RV Park all the time. When we got it the previous owner have retrofit in a fresh water tank so at least it could be taken on the road using golpher holes (or blue tank) for waste. I know they used it on the road quite a bit based on the underbelly condition. During our restoration we added both grey & black tanks, grey within the frame & black above the floor - so it can be done. Check out our "It's a Girl!!!
" thread for more information.