What do I do, I cant get rid of the parts. Need the money??????

I am trying to get rid of my exhuast and my intake but I cannot seem to do it. Where can I take it, because I have been so hard to sell them.
Its a slant six one barrall intake and an exhaust..somewhere in the early 70s.

Did you try selling them on here?? Shipping costs these days would probably cost more than the parts are worth, I'm no slant-6 expert but thay look kinda heavy...