If your car has a Pontiac motor you cannot get sidepipe headers(Hooker calls them "Sidemount" headers) so you would have to run a pipe from your existing headers/manifolds over to the side of the car. If your car has a Chevy motor you can get Sidemount headers for them 'cause essentially its a Camaro and the whole world revolves around Chevys. As far as the actual sidepipe part of the exhaust you can use the Hooker side tubes regardless of how you get your exhaust over by the doors. They are 4" tubes. You can use either Hookers "reverse flow" mufflers, which are quiet and somewhat restrictive or Hooker's glass pack inserts which flow better...but sound like glasspacks(your decision on whether or not thats a good thing), or you can spend some big bucks and gets some really cool spiral tube mufflers that alot of the 'vette guys run over at corvetteforums.com which sound great and flow great but they are loud for some people and they run about $300 by themselves(just the mufflers that go in the pipes, not the pipes, you buy them seperately).
http://www.spiralturbobaffles.com/