73 duster shell what's it worth ..

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Just for reference this is the car that I was thinking about that I bought 10 years ago out of a garage with no interior and put those rims on it because it was cheap at the time and they're long gone... It's been in my heated garage ever since and again not one dime of rust or a dent. The doors fenders hood and trunk have all been sanded to bare metal and clear coated... A few spots where some surface rust has started under the clear coat but nothing a couple swipes of 500 grit wouldn't make disappear. Still has its original granny green on the back quarters... Zero Bondo...
My opinion would be to leave the car complete but put a 300 dollar 318/727 along with a 7.25. Now you have a rust free, newer interior, running and driving '73 Duster and THAT would get you some money.