Saw an add for 370z HR header in local adds. Will this fit our car? What's the benefit of it? Will it give extra gain or better respond? Let me know please thanks

 

yes but you will need vq37 cats/testpipes, as the collector on the 3.7 headers are different from the 3.5

 

Damn .... never mind then. Just bought and installed test pipe hr-ypipe midpipe and muffler I don't think I want to replace the damn test pipe just for the header.

Anyway, any gain by doing so? if so how much? will I get a better throttle respond?