I thought that there was a rubber bumper on the bracket tab on the exhaust. Is there a hole in the tab for a bumper to attach to? If so, you need the bumper.

Mattel wrote:I hate to say it but all you need is the original center stand and a china connection.

And right ther is a big part of whats wrong in the U.S.
As a small manufacturer, I take comments like that as an insult.