Wil you dont make the gasket I need. It is more oval shaped, like the factory rear cat to exhaust pipe gasket from an 04-05 STI.
I have since gathered the tools and material to make my own gaskets-
Felpro exhaust gasket material
Wiss snips (assorted)
Permatex copper gasket spray
The 3 layered gasket seems to be holding up too although I will soon move to a dead soft aluminum gasket for both the inlet and outlet of the second cat pipe, since it has more resilience thant the soft exhaust material I have been using.