i bought a low profile copper heatsink ages ago for £15 a from a shop. (ripoff i know but it was convenient.)it was recommended for my socket 370. i wanted it small so it didn't block a ram slot. it made my pc crash worse than a normal one. i couldn't use it and went back to the old one.seemed like a waste of time to me. i no longer have it.
i think ebay is your only bet?