exhaust anyone? intakes?

what's up guys, I'm interested in getting a nice exhaust most likely going with a catback for now just to get a nice sound from the car. eventually going with a catless downpipe and ktuner. wanted to know what everyone was running or if I should just head to a local muffler shop and custom fab a 3 inch exhaust with a 2.5 inch flange to bolt up the stock piping. also looking into intakes as well, most likely going to go with the injen cai unless anyone can recommend me a better option.. lmk any feedback is appreciated.