I wonder why Buick put the 15x6.00 wheel on the Century and Roadmaster and put larger wheels on the Special and Super.
Has any owner swapped out the larger wheel and tires to their Century or Roadmaster?
For less than $300.00 you can get a new gas tank. No issues with trying to clean it and hope it will clean and not leak. The first thing I did was replace the gas tanks on my 1941's when I got them. The best insurance policy.