try tunermarket.com, they let you compare all the parts specific to your car, including the ones you mentioned above, and then you can compare the prices of a bunch of retailers selling them (I think modacar is one of them). given that, I would stay away from ceramic headers, and if your looking for stealth and awesome performance, definetely consider RSR Ex-Mag exhaust..(especially if your in california). I have recently bought a teg for track, but my daily is a Euro R 96 Prelude VTEC, with RSR, greddy header, and V2.
And dude,V2 is worth it.