Wanting to mod my Z! Low budget! $1200

[wahab94]

Hi, I am looking to mod my z give it a litte bit hp, but mostly sound. I want the sound to be deep and not to loud. its illegal here to change your exhaust, thats why I am lookin for something thats a bit good, but not too loud or any exhaust system that has remote where you can shut off the valves/sound.

so because I am poor, I've been lookin for things to start with. i am lookin at the stillen gen 3 CAI. and ARK polished stainless steel HFC.

if we get those 2 things, would I notice the sound difference? and if i do, where do I go next? find different mufflers or exhaust? Also whats a good exhaust that gives you great sound/not loud and gives you hp? I've been lookin at videos, ark sounds good, stillen not so much. But the thing is... I know they sound way different in videos than in real life. So any of you listened up and close to few good exhausts?

my 370z is coupe/touring package 2014. its completely stock with 4000KM and warranty.