At least an Intake! The Sound of VTEC is so damn cool. Stock suspension is fine, I wouldn't mess with that if you are just daily driving the car. HIDs is a plus, I love em', always had them, once u got them, u never go back.

STOCK vs I/H/E Car, of course the modded car is gonna have more power, theres no question about it, whether its tuned or not.

As far as the JDM 4-1 or DC SPORTS JDM 4-1, these header are good, for the cost that is, but do keep in mind, considering the road condition you drive on, especially since you daily drive ur car, becareful of speed bumps and such, which can dent in your header.

I pimp a mugen 4-2-1 header, has the best clearance ever, sits higher up from the oil pan, basically the oil pan goes first before anything hits the header.