Old block and Parts

Does anybody know where I could sell my old 5.0L HO block I live in NJ but I was just wondering if theres anyplace online that would purchase it so it could be reconditioned. Its from 83 so its not a roller block but the block itself only has 40k on it, the cylinders heads too. I'm just trying to get some money for them to fund the new roller block I'm going to be purchasing, or should I just keep them just in case I need another block for any reason. Im open to opinions thanks.