I started working on the headers and exhaust this weekend and just like everyone said it is a PITA! I've gotten to the point where I need to remove the O2 sensors from the front manifold so I can take the heat shield off but neither are budging and is starting to round out the edges of the nut. :/ so I think I'm a take a dremel cut it down and order new O2 sensors. 21 years of rust I guess really bonds the O2 sensor to the manifold. I guess it is expected for such an old NSX.
I also scratched up my rear valence when removing my muffler. Lesson learn remove stock tail pipe tips off before removing muffler because since they are so wide it gouges into the bumper if its at an angle.
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