where can I get all the gaskets I need for a header install?
are there different types of gasket materials that would be better?

 

order them from your local dealer, or mynismo.com for a better price.

afaik, there is only one brand/manufacturer for exhaust manifold gaskets: OEM Nissan

 

You can make your own for real cheap. Get a roll of a aluminum flashing at home depot for 7$. Trace the gaskets out on it with something hard. Cut them with a razorblade. Stack them in 5 for each gasket in your exhaust. I had to make some because the gaskets for my exhaust blew out. They do not leak. For the header,block gasket use the oem ones on your car, it will be fine. The fllange from the header to the exhaust i have only found those for sale through nissan and they are 19$ each.

 

oem gaskets are the best..

 

I think that I paid $30/2 from my dealer.

 

I still dont understand why people take a $30,000 car and act as if its a $500 Honda civic...Not to flame you or anything, but do you think the Gas money, the $7, and your efforts and time to cut out 10 layers of flashing, were worth the $20 the OEM gaskets cost?Not to mention the OEMgaskets are some of the best exhaust gaskets we have seen to date..