Ed, if the inside is starting to look a little tired, it probably would be a good idea. If you are going to keep it forever, why not freshen it up a little? I am sure if it is original, you are looking at a funky yellow or green galley area, and some wierd looking patterns on your seat cushions. I personally am going to change the yellow stuff in my '72 with some white countertops, and maybe a re-color of my stove and oven.
Post some pictures if you get a chance and let us see how it goes.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.