Need some suggestions!

Kbiz26

I have a 11' 370 in gun metal and I love this car! It's the sport touring package and I'm looking at modding some things. I sold my 05' G35 coupe with a Vortech supercharger that had 462hp to the wheels so I'd like to add so hp to my Z but not looking to add a turbo or sc on my Z right now. I know this is a matter of opinion and may spark some debate, but I'd like to add dual CAI, HFCs, etc. I'm thinking that I'd like all aftermarket parts to be from the same company, but if one company makes the best exhaust and another makes the best HFCs then I wouldn't be opposed to going with different manufacturers. Which company, in your opinions, make the best aftermarket products for my 11' Z? I was kinda leaned my to Stillen, but Injen, Berk and a few others make nice stuff too. Also, I was considering staying with all Nismo parts but I need help! Thanks in advance guys and I'll get some pics uploaded asap!