Exhaust??

What kind of exhaust do you guys have? I have a 97 Civic EX and I plan on getting a greddy turbo for it, and I want to run a little over the 5.5psi and I need some recommendations on what exhaust to get. Should I get custom piping or get the whole thing from the company? And because I plan on getting turbo someone told me that getting headers would be a waste, as well as an intake...is this true? Should I keep the stock headers? Thanks