Hi guys I have a 2004 g35 6MT and having it for a couple months I'm looking to buy a catback exhaust kit. I've done my research online and I dont want to spend more than $300. I know it's cheap for an exhaust but on ebay they have exhausts for less than $350 and I want to hear your advice, thoughts on it, reviews, or any ideas you would like to share.
I've done some research on the GODSPEED catback exhaust and some other ones.

only kits I've seen were Borla and Magnaflow, though I hear Stillen has a good kit too. Lowest I've found was $800+Sh/H for the Borla off amazon. Do you have a sedan or coupe? I've got a sedan, and far as I can tell there's not as wide a selection for sedans compared to coupes.

Also, if you're just looking for a few more horses, I'd recommend starting with a motordyne 5/16 plenum spacer
http://www.amazon.com/MOTORDYNE-THERMAL ... num+spacer
then a better intake. I have a Stillen z-tube with a K&N high-flow cone
http://www.amazon.com/STILLEN-402834-Hi ... 35+stillen
If you're just looking for better sound, can't help ya there... I rather like the noise from my G now, which is why if and when I do upgrade I will most likely go magnaflow. From what I've found it seems to keep the character of the standard car while improving performance.

Agree on the spacer!

Cheap kits have poor fitment and I've heard they sound like a** and don't last long. You really get what you pay for.

I'd suggest watching classified ads on G sites for someone selling their used exhaust as that will give you better quality for less.