Question about Stillen headers...

[marcussoori]

Hi all. To understand my questions, check out this thread:

Stillen Headers on 370z

Now, here are my questions:

1) Doesn't the Stillen header look similar to the stock header, with similar diameter piping? What makes the Stillen one better?

2) In the thread posted above, the installer says there is reduced midrange power, which could be helped with new Y-pipes. So, why don't we just get new Y-pipes rather than headers? How much more hp will I get with a new Y-pipe? Finally, are there any Y-pipe vendors?

3) So, if I buy a Stillen exhaust, intakes, Berk HFCs, and a Y-pipe, won't I get close to the same hp gains as if I add the Stillen header?

Thanks in advance...