I have the SLP headers with cats and catback LM1 system on my 06 GTO.
I got them from Maryland Speed. He's a really nice guy. If you call him , he can tell you if he has them in stock, there was a delay on the headers from SLP.
here is a video clip of what they sound like.
turn up the volume on the media player.
06 GTO, M6 . SLP Skipshift, JHP Binnacle Guage Pod, GMM Ripshifter, SLP Lt's with Cats, SLP catback LM1,Raptor Shiftlight,Pedders Drag Springs 5/16" lift.
Last edited by formula79; 12-12-2006 at 05:25 PM.