Originally Posted by mr_hicksta
You can get the 3" and 2.5" gaskets from any of the vendors here (i.e. Infamous Performance, Boston Motorsports or Underdog).
Thanks for the fast reply!
I don't see the last two on the Vendor directory page. But Infamous is there. Did a search on their page for Stromung and got nothing. Must be a call them part.
I did find this link via Google:
And a strong suggestion to use it from another enthusiast site.