I have the passenger and driver side stock o2 sensors off of my car. They have around 3,000 miles on them, so are obviously in perfect working order. I no longer need them due to my AEM EMS setup I now have on my Z. They are boxed and ready to ship out.
I also have SpecialtyZ 2.5" test pipes in stainless steel with both flex pipes on them and highflow cats. They cost me around 600-700 for the pair when new. It is in perfect shape. Send me offers.
I also have the B&B stainless steel Quad Oval tipped exhaust (everyone's favorite looking one) in 2.5" piping for sale. It is in very good shape. Send me offers.