I have a 57 chevy belair 4 door sedan my dad bought new. In the 70's and 80's rstorers cannibalized 4 door cars to make parts for 2 door coupes. Now that 2 door coupes are unaffordable to most, there seems to be a lot more demand for the 4 door hardtops and sedans of desireable years, even a 1964 Impala. Go to a good newsstand and buy a copy of the Old Cars Prioce Guide. It has current auctiion prices for cars going back to the early 1900's, rated as 1 being worst to 5 being a 100 point show car. Watch your spending, don't spend over the market value, and you will have a nice car in the end, that you can keep OR sell, you'd have profit headroom at the auction block, especially kept as an original. It's dual exhaust, so if it's factory, it probably was a 4 bbl carb "poweer Pack" option, which was desirable in any year. Good Luck, get the current auction prices, shoot for a grade 4 or grade 5, watch your spendig, you'll do fine. In the long terrm, the prces of 4 door models are rising faster as a percentage year-over-year, as I have seen it! Not many have the abillity to trade a house for a coupe!

its not worth it, unless you want to keep it. 4 drs don't have a good resale value. I would put the least amount of money I could in it. Or sell as is. 20,000 dollars... It would be worth when done 5,000. Or less sorry for bad new's