What do you think?

Okay, so I just bought a SVX last Saturday and the following day found some problems with it. I took it to a mechanic today. They drove it and put it on a lift. If you didn't read my other post, I had said there was a metal scraping/rattling sound that occurs anywhere from 10-30 miles an hour...Goes away at faster speeds. He said that I need a new sway bar and he believes that is making the noise...What do you guys think?