Has anyone here bought a ported intake manifold off eBay from seller: jscottwrxsti2004? It says it's fully ported and will support over 500 hp. It seems kind of cheap if it's as good as they make it sound, wondering if anyone has given it a try. They seem to be selling, I've put it on my watch list twice and both times it has been sold fairly quickly. Just don't want to buy a poorly ported manifold. Thanks for the help.