Here is one option. Not exactly quiet though.

http://www.rockymountainwesty.com/Stainless_Steel_Vanagon_WB_Exhaust_p/1wbx-ss.htm

Mark

TJ Hemrick wrote:
> Does anyone offer a "better" exhaust system instead of the stock system.  I
> say "better" because "hi-performance" and vanagon in the same sentence is
> quickly approaching the border of oxymoron.  That is the goal and it must
> be stainless steel.  I know Frank Condelli used to offer one but he
> informed me via email they no longer carry them.  I see stainless steel
> systems on some of the venders sites but they're just the stock system made
> out of a different metal.
>