DIY: Stillen header installation
F.I. Long-Tube Headers installed - Review/Pics/Vids/Dyno
DIY , Stillen Header with Berk HFC
PPE header
A quick google search brought up these threads for you to check out. I did not read them so dont know if they are helpful or not.
Site:the370z.com header install -is what I used to search google.