Exhuast: If you don't want to make a lot of noise, get an Apex'i WS or at Thermal R&D stealth, both cat-backs.
Intake: I'd save a little bit of money and do it right the first time. AT
www.groupbuycenter.com you can get a new AEM CAI shipped for around $170. That's better than first wasing $50 on a no-name CAI IMO. If you don't want to do that, just get some generic CAI off of e-bay I guess.