Hookers new Super Competition and Competition Headers for 98??2002 LS F??bodies have all the A.I.R. and EGR Fittings deleted and are for high output, supercharged or big inch versions of the Gen III (LS??6/LS??7) engine. The Competition versions feature 1??3/4?? tuned length 16 gauge primary tubes and a 3?? slip fit long transition 9?? conventional collector for efficient scavenging and reduced backpressure. The Super Competition and Competition versions both feature thick 3/8?? flanges that will seal perfectly and indefinitely and are available in black paint or Hookers ceramic thermal barrier coating. These high performance Headers are intended for off??road race use only. These Headers maintain the high value standards Hooker Headers are known for. These Headers are easy to install, offer good ground clearance and come complete with gaskets and hardware kit. Y??pipes are also available to fit these headers.