I would say clean them up and try to sell them, there are always people looking for good replacement parts. Even "scrap" parts like alternator brackets and manifolds would be a perfect find for some other guy.
Find a site similar to Stovebolt for people that have 348 and 409 Chevy cars and market them there, you might get decent money out of them, or at least give them away to a fellow gear head in need
