Rear engine mount, I would recommend cp-e, SURE or streetunit, the streetunit ones have interchangeable bushes, so you can change the harshness of the mount if you aren't happy with its feel, the cp-e ones are fixed so you need to choose before you buy, fwiw, I run the 75 duro CPE and dont find the vibes particularly bad, or annoying.
Stay away from TRZ mounts, even their "softer" mount will rattle the fillings from your teeth, although I think this is more a case of poor production standards, than the actual rubber used, as others have reported no issues with these, might be a bit of a lucky dip.
Intake, depending on how orchestral you want your engine bay to sound, an SRI will give you all the whooshy, psssht noises the joys of turbocharging bring, a CAI will amplify this again, a CAI and alloy TIP will scare kittens and the elderly.
Exhaust, A CBE will give you sound, and thats about it, you can replace the stock large rear baffled muffler with a sportier straight through style for about $200 for a bit of noise, a DP will make the stock exhaust sound a lot meatier, a DP + CBE will sound awesome, I am running a CPE / Best mufflers DP + a 3" CBE into a magnaflow straight through muffler, which then tapers down to the stock 2.5" resonator & tailpipe. It sounds great without being stupidly loud, and cabin noise is still very tolerable.
Reedy may have some footage of my car from the weekend, if you ask him nicely he might post it up.
Nearly all men can stand adversity. But if you want to test a man's character - give him power.
Abraham Lincoln