Catback Help!

Brazilian Z

Hello!

As you can see my nickname, I'm one of the few Brazilians own a 370Z, Nissan's from Brazil does not bring this model here. If you want the car, the only way is by independent import.

If they do not bring the car, much less accessories. If we want something we have to import from the USA.

I know that this kind of discussion is repetitive, but I have a lot of difficult to find things here because many messages have the language abbreviated or with slang, my reading becomes very difficult. So I hope to you guys be patient with this Brazilian here.

Enough chat, let's get to it:

We want to import an catback for our 370Z. Searching the internet I found many manufacturers:

-Stillen
-Borla
Nimo-
-Invidia
-MXP
- Berk
-HKS
-Greddy
- Fujimura
-Fujitsubo

1 - Considering the experience of you, which of these would you choose?
2 - Which has more hp gains?
3 - How much is a reasonable price I pay for?
4 - What changes if I also put the catalytic converters?

Thank you for your attention and help. Sorry for bad English
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