Want to put some long tubes on my 02" SS. Looking at hedman or pacesetter, after market y pipe then the LMII at the end. My question is the car needs to stay smog legal. Where would I put the cats and 02 sensors?? Right after the Headers and before the aftermarket Y pipe, or is it not possibe to do with long tubes... any suggestions on the install, how long it would take to have it done or extra parts i might require would be great.

 

look into SSautochrome, 260 for just the headers. With longtubes, u cannot really do cat's legally, u would have to have them custom made into your y-pipe i believe
http://www.ssautochrome.com/level.itml/icOid/1698
they are stainless steel, and excellent construction.

 

For the LS1s, there is an aftermarket catted y-pipe for that will fit the Pacesetter headers. Texas Speed sold them last I checked.