You never know, I almost ordered a new tank for my 83 as it had been sitting for over 20 years with about 1/2 a tank of San Franciso fuel in it.... I removed the tank and drained it and its like brand new.. So is the pickup tube and sender.... Crazy.....Since the car has been sitting since 2005. I should probably just get a new gas tank. I was thinking of pulling it, checking it etc. but I am probably better off just having a new one ready to go in. The last car I did that had been sitting for only 10 years had rusted sludge an inch thick.