Several people have inquired about the gaskets.
As stated in the original post, the GTM test pipes use the OEM Nissan gaskets. This virtually eliminates exhaust leaks if installed properly.
The sale includes a complete set of USED gaskets. You can reuse them if you choose. However, like I originally explained in the OP, given the PITA changing out the pipes, I would recommend you purchase new gaskets.
Here is a picture of the
USED gaskets included with the sale.
Price lowered to $165 shipped to the lower 48