I bought Spectre products for the piping and the t-bolt/coupler. The t-bolt was purchased from Summit which was about $10 or so. It's fairly wide which has a polished finish on the outside with a rubber inner linning. The pipe was purchased off of Ebay for less than $20, b/c Auto Zone couldn't find the part number I was asking for and it wasn't in the Spectre catalog for some reason.
I would also recommend getting that before your car gets tuned, b/c it makes quite a bit of difference.
Here is a pic of it...
Hybrid Mode
