You still have a choice though. intakes? There is K&N, Injen, MP and of course my favorite- Crab Intakes. Stay away from the eBay cheep ones and the knock off injen's.
Exhaust? Magnaflow makes a cat back single exhaust bolt up.
My favorite and what I have is a Classic Performance GT-R bolt up cat back exhaust.
You can google all those. There is even a sponsor on this site that sells the K&N Typhoon intake.
Im on my third exhaust and cant recommend the GT-R enough....
If you PM me I can tell you how to save about $100 on it.