Swap shop?
 

Just a thought. I'm looking to see if anyone's interested in swapping their exhaust for mine but there's nowhere sensible to put it.

Just put it in the For Sale or Wanted section with the subject line SWAP: .........

We used to have a section for swaps years ago, but got rid as it didn't get used much. In the For Sale section, you might get a cash offer which would let you buy someone elses.....