I have started to rescue a 1949 Cadillac Series 62 4 door sedan. This car was parked outside in Arkansas for 30 years. It will need lots of TLC to put on the road at this point.
Your car looks to be in about the same condition as mine. I will be replacing the front floor pans in April as it is too cold to do the work now. It looks like the metal is very solid. take a look at this site for some interesting information on 49 Cadillacs. http://www.1949cadillac.com/category/engine/fuel/air-cleaner/